Annual report pursuant to Section 13 and 15(d)

Income Taxes (Provision for Income Taxes) (Details)

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Income Taxes (Provision for Income Taxes) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]                      
(Loss) income before income taxes $ (421) $ (3,149) $ (2,833) $ (5,292) $ 2,030 $ (571) $ 3,690 $ 4,857 $ (11,695) $ 10,006 $ 2,404
Expense (benefit) under statutory U.S. tax rates                 (4,093) 3,502 817
Increase (decrease) in taxes resulting from:                      
(Decrease) increase in valuation allowance                 79 (28,590) (272)
Change in fair value of contingent consideration, not taxable                 0 0 41
Other nondeductible items                 1,701 818 1,085
State taxes, net of federal benefit                 1,600 689 1,183
Other, net                 231 235 72
Income tax expense (benefit)                 $ (482) $ (23,346) $ 2,926