Business Combinations (Details) (USD $)	12 Months Ended			0 Months Ended	1 Months Ended	0 Months Ended	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 04, 2014	Dec. 31, 2014	Oct. 01, 2013	Dec. 31, 2014	Mar. 31, 2014
Business combination
Increase in goodwill as result of working capital adjustments	$ 173,000
Fair value of the consideration transferred
Contingent consideration earned and paid		5,000,000
Summary of estimated fair values of the assets acquired and liabilities assumed
Goodwill	114,959,000	91,348,000	55,828,000		114,959,000		114,959,000
Intangible assets acquired and the estimated weighted-average useful life
Asset impairment	58,170,000	1,220,000	1,335,000
PSP
Business combination
Percentage of ownership acquired				100.00%
Fair value of the consideration transferred
Amount paid (net of cash acquired)				145,382,000
Working capital adjustment				88,000
Total				145,470,000
Summary of estimated fair values of the assets acquired and liabilities assumed
Account receivable				9,383,000
Inventory				13,812,000
Other current assets				463,000
Property, plant, and equipment				6,912,000
Intangible assets				79,810,000
Total identifiable assets acquired				110,380,000
Accounts payable and accrued expenses				6,473,000
Customer deposits				6,039,000
Other				1,089,000
Estimated deferred tax liability, net				2,705,000
Total liabilities assumed				16,306,000
Net identifiable assets acquired				94,074,000
Goodwill				51,396,000
Net assets acquired				145,470,000
Gross contractual value of accounts receivable				10,500,000
Percentage of goodwill expected to be tax deductible				80.00%
Intangible assets acquired and the estimated weighted-average useful life
Finite lived intangible assets acquired, amount				79,810,000
Intangible assets acquired, amount				79,810,000
Acquisition related costs	3,200,000
Revenue and income (loss) from continuing operations before income taxes
Revenue					7,906,000
Net Income (loss)					(3,011,000)
Pro forma consolidated statement of operations
Revenue	447,089,000	379,272,000
Income (loss) from continuing operations before income taxes	(68,715,000)	(77,252,000)
PSP | Technology
Intangible assets acquired and the estimated weighted-average useful life
Finite lived intangible assets acquired, amount				39,950,000
Average useful life				10 years
PSP | Customer relationship
Intangible assets acquired and the estimated weighted-average useful life
Finite lived intangible assets acquired, amount				34,310,000
Average useful life				14 years
PSP | Backlog
Intangible assets acquired and the estimated weighted-average useful life
Finite lived intangible assets acquired, amount				3,340,000
Average useful life				6 months
PSP | Trademarks and tradenames
Intangible assets acquired and the estimated weighted-average useful life
Finite lived intangible assets acquired, amount				1,080,000
Average useful life				1 year
PSP | Non-compete agreements
Intangible assets acquired and the estimated weighted-average useful life
Finite lived intangible assets acquired, amount				1,130,000
Average useful life				2 years
ALD
Business combination
Percentage of ownership acquired						100.00%
Decrease in working capital adjustment	1,400,000
Increase in goodwill as result of working capital adjustments	200,000
Reduction in accrued expenses as a result of working capital adjustment	1,200,000
Working capital adjustment payment received	1,300,000
Fair value of the consideration transferred
Amount paid (net of cash acquired)						71,488,000
Contingent consideration						33,539,000
Working capital adjustment						(2,695,000)
Total						102,332,000
Contingent consideration earned and paid		5,000,000
Amount of change in contingent consideration as a result of changes in the fair value	(29,400,000)	800,000						(29,400,000)
Summary of estimated fair values of the assets acquired and liabilities assumed
Account receivable						1,523,000
Inventory						386,000
Other current assets						512,000
Property, plant, and equipment						1,917,000
Intangible assets						99,270,000
Total identifiable assets acquired						103,608,000
Current liabilities						4,370,000
Estimated deferred tax liability, net						32,426,000
Total liabilities assumed						36,796,000
Net identifiable assets acquired						66,812,000
Goodwill						35,520,000
Net assets acquired						102,332,000
Intangible assets acquired and the estimated weighted-average useful life
Finite lived intangible assets acquired, amount						99,270,000
Intangible assets acquired, amount						99,270,000
Asset impairment							53,900,000
Acquisition related costs		1,000,000
Pro forma consolidated statement of operations
Revenue		346,319,000	522,029,000
Income (loss) from continuing operations before income taxes		(60,983,000)	16,840,000
ALD | Technology
Intangible assets acquired and the estimated weighted-average useful life
Finite lived intangible assets acquired, amount						73,160,000
Average useful life						14 years
ALD | Customer relationship
Intangible assets acquired and the estimated weighted-average useful life
Finite lived intangible assets acquired, amount						20,630,000
Average useful life						8 years
ALD | Trademarks and tradenames
Intangible assets acquired and the estimated weighted-average useful life
Finite lived intangible assets acquired, amount						140,000
Average useful life						1 year
ALD | Non-compete agreements
Intangible assets acquired and the estimated weighted-average useful life
Finite lived intangible assets acquired, amount						270,000
Average useful life						3 years
ALD | IPR&D
Intangible assets acquired and the estimated weighted-average useful life
Finite lived intangible assets acquired, amount						$ 5,070,000