Income Taxes - Schedule of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Beginning Balance	$ 943	$ 1,919	$ 1,372
Additions for tax positions taken in prior years	1,295	43	1,019
Reductions for tax positions taken in prior years		(666)
Reductions for lapse of applicable statutes	(43)	(353)	(472)
Unrecognized Tax Benefits, Ending Balance	2,195	943	1,919
Continuing Operations
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Beginning Balance	307	1,283	736
Additions for tax positions taken in prior years	1,295	43	1,019
Reductions for tax positions taken in prior years		(666)
Reductions for lapse of applicable statutes	(43)	(353)	(472)
Unrecognized Tax Benefits, Ending Balance	1,559	307	1,283
Discontinued Operations
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Beginning Balance	636	636	636
Additions for tax positions taken in prior years	0	0	0
Reductions for tax positions taken in prior years		0
Reductions for lapse of applicable statutes	0	0	0
Unrecognized Tax Benefits, Ending Balance	$ 636	$ 636	$ 636