Annual report pursuant to Section 13 and 15(d)

Fair Value of Assets and Liabilities (Schedule of Fair Value of Assets and Liabilities Measured on a Recurring Basis) (Details)

v3.6.0.2
Fair Value of Assets and Liabilities (Schedule of Fair Value of Assets and Liabilities Measured on a Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Carrying Value    
Assets    
Other investments   $ 609
Total assets $ 3,543 4,079
Liabilities    
Contingent consideration payable 7,144 2,813
Total liabilities 7,526 3,051
Carrying Value | Debt securities    
Assets    
Other investments 1,850 1,125
Liabilities    
Liabilities 25 30
Carrying Value | U.S. Treasury notes    
Assets    
Other investments 101 101
Liabilities    
Liabilities 96 200
Carrying Value | Common stock and warrants    
Assets    
Other investments 1,149 1,885
Liabilities    
Liabilities 261 8
Fair Value    
Assets    
Other investments   609
Total assets 3,543 4,079
Liabilities    
Contingent consideration payable 7,144 2,813
Total liabilities 7,526 3,051
Fair Value | Level 1    
Assets    
Other investments   0
Total assets 937 1,286
Liabilities    
Contingent consideration payable 0 0
Total liabilities 261 8
Fair Value | Level 2    
Assets    
Other investments   609
Total assets 2,606 2,793
Liabilities    
Contingent consideration payable 0 0
Total liabilities 121 230
Fair Value | Level 3    
Assets    
Other investments   0
Total assets 0 0
Liabilities    
Contingent consideration payable 7,144 2,813
Total liabilities 7,144 2,813
Fair Value | Debt securities    
Assets    
Other investments 1,850 1,125
Liabilities    
Liabilities 25 30
Fair Value | Debt securities | Level 1    
Assets    
Other investments 0 0
Liabilities    
Liabilities 0 0
Fair Value | Debt securities | Level 2    
Assets    
Other investments 1,850 1,125
Liabilities    
Liabilities 25 30
Fair Value | Debt securities | Level 3    
Assets    
Other investments 0 0
Liabilities    
Liabilities 0 0
Fair Value | U.S. Treasury notes    
Assets    
Other investments 101 101
Liabilities    
Liabilities 96 200
Fair Value | U.S. Treasury notes | Level 1    
Assets    
Other investments 0 0
Liabilities    
Liabilities 0 0
Fair Value | U.S. Treasury notes | Level 2    
Assets    
Other investments 101 101
Liabilities    
Liabilities 96 200
Fair Value | U.S. Treasury notes | Level 3    
Assets    
Other investments 0 0
Liabilities    
Liabilities 0 0
Fair Value | Common stock and warrants    
Assets    
Other investments 1,149 1,885
Liabilities    
Liabilities 261 8
Fair Value | Common stock and warrants | Level 1    
Assets    
Other investments 494 927
Liabilities    
Liabilities 261 8
Fair Value | Common stock and warrants | Level 2    
Assets    
Other investments 655 958
Liabilities    
Liabilities 0 0
Fair Value | Common stock and warrants | Level 3    
Assets    
Other investments 0 0
Liabilities    
Liabilities 0 0
Certificates of deposit | Carrying Value    
Assets    
Cash and cash equivalents 443 359
Certificates of deposit | Fair Value    
Assets    
Cash and cash equivalents 443 359
Certificates of deposit | Fair Value | Level 1    
Assets    
Cash and cash equivalents 443 359
Certificates of deposit | Fair Value | Level 2    
Assets    
Cash and cash equivalents 0 0
Certificates of deposit | Fair Value | Level 3    
Assets    
Cash and cash equivalents $ 0 $ 0