Income Taxes - Effective Income Tax Expense (Benefit) Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Statutory amount (computed at 35%)	$ (3,703)	$ 3,519	$ (212)
State income tax, net of federal benefit	(709)	(312)	(20)
Permanent differences	43	122	(13)
Permanent differences, incentive stock options	298	157	237
True up of deferred balances for non-qualified stock options	0	0	(571)
True up of deferred balances for state tax benefits	0	0	(401)
True up to prior year taxes	0	(311)	0
Valuation allowance	1,552	0	0
Other, net	0	0	43
Total	$ (2,519)	$ 3,175	$ (937)
Consolidated effective tax rate	23.80%	31.60%	154.60%