Fair Value (Detail 1) - Deferred Acquisition Costs [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Begining Balance	$ 789	$ 1,902
Payments	(789)	(1,677)
Total adjustments included in earnings	0	564
Ending Balance	0	789
Polar Technologies [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Begining Balance	0	667
Payments	0	(667)
Total adjustments included in earnings	0	0
Ending Balance	0	0
CCS [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Begining Balance	789	1,235
Payments	(789)	(1,010)
Total adjustments included in earnings	0	564
Ending Balance	$ 0	$ 789