Deferred Compensation Agreements and Stock-Based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
LTR Plan
Deferred compensation agreements
Percentage of participant's annual earned bonus deferred	50.00%
Period of deferral of annual earned bonus	1 year
Total deferred compensation liability	$ 4,459	$ 5,220
Maximum percentage of participant's earned bonus amount up to which common stock can be purchased in a stock purchase plan	16.67%
Percentage of average market closing prices used in determining number of common stock that could be purchased by participants	75.00%	75.00%
Discounted price from the average December market price at which shares purchased by participants in LTR Plan (as a percent)	25.00%
JCG Stakeholder Incentive Plan
Deferred compensation agreements
Total deferred compensation liability	$ 0	$ 278
Vesting period	5 years
Period of payment of deferred benefit amount plus interest in equal monthly installments	3 years		3 years
Percentage of amounts accrued added to the 2015 payments		50.00%