Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at the Beginning of the Year ($)	$ 143	$ 134	$ 157
Charged to Expense ($)	304	61	22
Acquisitions/ Transfers and Other ($)	1	0	0
Write-offs Net of Recoveries ($)	(196)	(52)	(45)
Balance at the End of the Year ($)	252	143	134
Allowance for Excess and Obsolete Inventories [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at the Beginning of the Year ($)	4,019	3,570	1,941
Charged to Expense ($)	475	892	2,023
Acquisitions/ Transfers and Other ($)	(1)	(24)	12
Write-offs Net of Recoveries ($)	(1,114)	(419)	(406)
Balance at the End of the Year ($)	$ 3,379	$ 4,019	$ 3,570