Intangible Assets (Components Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Original cost	$ 16,293		$ 16,293		$ 16,229
Accumulated amortization	(3,892)		(3,892)		(2,845)
Net identifiable intangible assets	12,401		$ 12,401		$ 13,384
Weighted-average useful lives (years)			9 years		9 years
Amortization of purchased intangibles	200	$ 156	$ 399	$ 313
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Original cost	5,267		5,267		$ 5,226
Accumulated amortization	(887)		(887)		(671)
Net identifiable intangible assets	4,380		$ 4,380		$ 4,555
Weighted-average useful lives (years)			10 years		10 years
Developed Technology
Finite-Lived Intangible Assets [Line Items]
Original cost	8,792		$ 8,792		$ 8,770
Accumulated amortization	(2,561)		(2,561)		(1,832)
Net identifiable intangible assets	6,231		$ 6,231		$ 6,938
Weighted-average useful lives (years)			6 years		6 years
Trademarks / Trade-Names
Finite-Lived Intangible Assets [Line Items]
Original cost	2,194		$ 2,194		$ 2,193
Accumulated amortization	(433)		(433)		(334)
Net identifiable intangible assets	1,761		$ 1,761		$ 1,859
Weighted-average useful lives (years)			15 years		15 years
Covenants Not to Compete
Finite-Lived Intangible Assets [Line Items]
Original cost	40		$ 40		$ 40
Accumulated amortization	(11)		(11)		(8)
Net identifiable intangible assets	29		$ 29		$ 32
Weighted-average useful lives (years)			2 years		2 years
Cost of product revenues
Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangibles	317	140	$ 633	280
Operating expenses
Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangibles	$ 200	$ 156	$ 399	$ 313