Income Taxes - Loss Carryforwards and Other (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating loss carryforwards
Unrecognized tax benefits that would impact effective tax rate	$ 200	$ 200
Interest and penalties accrued	400	300
Reconciliation of the beginning and ending amount of unrecognized tax benefits
Balance at the beginning of year	240	343	$ 413
Additions based on tax positions related to the current year	0	0	0
Additions for tax positions of prior years	0	0	0
Reductions for tax positions of prior years	0	(103)	(70)
Settlements	0	0	0
Balance at the end of year	240	240	$ 343
Valuation allowance	$ 3,184	4,438
State and Puerto Rico
Reconciliation of the beginning and ending amount of unrecognized tax benefits
Future tax benefits		5,100
Net operating loss carryforwards		70,400
Valuation allowance		3,200
Increase in valuation allowance		1,300
Deferred tax assets net of valuation allowance		$ 2,200