Annual report pursuant to Section 13 and 15(d)

Income Taxes (Provision for Income Taxes) (Details)

v3.6.0.2
Income Taxes (Provision for Income Taxes) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]                      
Federal statutory income tax rate                 35.00% 35.00% 35.00%
(Loss) income before income taxes $ 2,586 $ (6,911) $ (1,576) $ (6,385) $ (421) $ (3,149) $ (2,833) $ (5,292) $ (12,286) $ (11,695) $ 10,006
Expense (benefit) under statutory U.S. tax rates                 (4,300) (4,093) 3,502
Increase (decrease) in taxes resulting from:                      
(Decrease) increase in valuation allowance                 12,540 79 (28,590)
Other nondeductible items                 1,323 1,701 818
State taxes, net of federal benefit                 671 1,600 689
Other, net                 (209) 231 235
Income tax expense (benefit)                 $ 10,025 $ (482) $ (23,346)