Profit-Sharing, Pension, and Other Postretirement Benefit Plans (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
401(k) discretionary contributions	$ 0	$ 0
Measurement date for pension plan	December 31
Recognized net actuarial (gain) loss	$ (925)	1,930
Component of net pension cost (Income)	223	86
Component of net pension cost (Income) in next year	100
Payments expected to be paid under U.S. retirement plan for fiscal 2016	1,100
Expected payments under Retirement Benefit Plan for fiscal 2016	$ 22
401k Plan
Defined Benefit Plan Disclosure [Line Items]
Matching employee compensation contribution	6.00%
Matching employee compensation contributions, percent of match	50.00%
Discretionary contributions exceeding performance targets	2.00%
401(k) matching contribution expense	$ 1,400	1,000
Replacement Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
RBP accrued liability	400	400
Current portion of the RBP liability	22	22
Long-term portion of the RBP liability	300	$ 400
United States Pension Plan of US Entity, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Expected payments under U.S. Defined Benefit Plan for fiscal 2016	$ 1,100