Income Taxes - Schedule of Reconciliation of Effective Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
U.S. federal statutory income tax rate	$ (7,662)	$ (851)	$ 6,017
U.S. state and local income taxes, net of U.S. federal income tax benefits	(1,075)	(69)	1,432
Unrecognized tax benefit	(603)	589	6
Valuation allowance	1,208	0	0
Non-taxable income	(1,267)	(696)	(593)
Non-deductible legal and regulatory expenses	0	0	5,296
Provision to return adjustments	(4,167)	442	(3)
Change in tax rates	264	305	53
Foreign tax rate differentials	143	145	(447)
Other non-deductible expenses	897	541	373
Current and Deferred Income Tax Expense (Benefit) from Continuing Operations	$ (12,262)	$ 406	$ 12,134
U.S. federal statutory income tax rate, percent	35.00%	35.00%	35.00%
U.S. state and local income taxes, net of U.S. federal income tax benefits, percent	4.90%	2.80%	8.30%
Unrecognized tax benefits, percent	2.80%	(24.30%)	0.00%
Effective Income Tax Rate Reconciliation, Valuation Allowance, Percent	(5.50%)	0.00%	0.00%
Other, percent	5.80%	28.70%	(3.40%)
Effective Income Tax Rate Reconciliation, Non-deductible legal and regulatory expenses, Percent	0.00%	0.00%	30.80%
Adjustment to reflect prior year tax return filings, percent	19.00%	(18.20%)	0.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	(1.20%)	(12.50%)	0.30%
Non-U.S. operations, percent	(0.70%)	(6.00%)	(2.60%)
Business promotion and other non-deductible expenses, percent	(4.10%)	(22.20%)	2.20%
Total income tax expense, percent	56.00%	(16.70%)	70.60%