Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 13,965	$ 15,954
Finite-Lived Intangible Assets, Accumulated Amortization	(6,208)	(7,381)
Intangible Assets, Net (Excluding Goodwill)	7,757	8,573
Amortization of Intangible Assets	1,200	$ 1,300	$ 700
Finite-Lived Intangible Assets, Gross [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	1,110
Finite-Lived Intangible Assets, Amortization Expense, Year Two	1,110
Finite-Lived Intangible Assets, Amortization Expense, Year Three	1,110
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,110
Finite-Lived Intangible Assets, Amortization Expense, Year Five	1,110
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life		1 year
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life		35 years
Customer-Related Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	7,551	$ 7,551
Finite-Lived Intangible Assets, Accumulated Amortization	(3,921)	(3,366)
Intangible Assets, Net (Excluding Goodwill)	$ 3,630	4,185
Finite-Lived Intangible Asset, Useful Life	6 years 6 months
Use Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 6,414	8,403
Finite-Lived Intangible Assets, Accumulated Amortization	(2,287)	(4,015)
Intangible Assets, Net (Excluding Goodwill)	$ 4,127	$ 4,388
Finite-Lived Intangible Asset, Useful Life	6 years 5 months