Fair Value (Details 1) - Deferred Acquisition Costs [Member] - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Begining Balance		$ 1,902	$ 667
2015 Acquisition	[1]		1,982
Payments		(1,677)	(445)
Total adjustments included in earnings		564	(302)
Ending Balance		789	1,902
Polar Technologies [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Begining Balance		667	667
2015 Acquisition	[1]		0
Payments		(667)	0
Total adjustments included in earnings		0	0
Ending Balance		0	667
CCS [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Begining Balance	[1]	1,235	0
2015 Acquisition	[1]		1,982
Payments	[1]	(1,010)	(445)
Total adjustments included in earnings	[1]	564	(302)
Ending Balance	[1]	$ 789	$ 1,235

[1] Represents acquisition of a supplier of refrigerants and compressed gases in January 2015.