Employee Benefit Plans (Details)	12 Months Ended
	Dec. 31, 2015 USD ($) h	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Mandatory work hours per year | h	1,000
Mandatory 401(k) match	$ 0.25
Maximum annual employer 401(k) contribution	6.00%
Amount expensed for 401(k) contributions	$ 759,000	$ 774,000	$ 673,000
Accrued liability for plan	1,400,000	1,300,000
Increase (decrease) in non-qualified deferred compensation plan	99,000	140,000	(99,000)
Aggregate payout under profit sharing plan	1,200,000	1,000,000	858,000
RML
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Amount expensed for 401(k) contributions	$ 172,000	12,000
Term of service required	3 months
Age requirement	21 years 6 months
Supplemental Employee Retirement Plan
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Contributions to supplemental plan	$ 228,000	184,000	$ 220,000
Accrued liability for plan	2,500,000	2,500,000
Supplemental Employee Retirement Plan | RML
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Contributions to supplemental plan	692,000	87,000
Accrued liability for plan	$ 2,900,000	$ 4,400,000
Vesting period	10 years