Annual report pursuant to Section 13 and 15(d)

Intangible Assets, Net and Goodwill (Narrative) (Details)

v2.4.1.9
Intangible Assets, Net and Goodwill (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]      
Amortization expense $ 7,057,000us-gaap_AmortizationOfIntangibleAssets $ 1,330,000us-gaap_AmortizationOfIntangibleAssets $ 1,402,000us-gaap_AmortizationOfIntangibleAssets
Estimated amortization expense, 2015 5,147,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths    
Estimated amortization expense, 2016 5,147,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo    
Estimated amortization expense, 2017 3,883,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree    
Estimated amortization expense, 2018 2,980,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour    
Estimated amortization expense, 2019 2,980,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive    
Impairment of goodwill 0us-gaap_GoodwillImpairmentLoss 0us-gaap_GoodwillImpairmentLoss 0us-gaap_GoodwillImpairmentLoss
Impairment of intangible assets (excluding goodwill) 0us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill 0us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill 0us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill
Goodwill 68,594,000us-gaap_Goodwill 14,438,000us-gaap_Goodwill  
Goodwill increase during the period 54,156,000us-gaap_GoodwillAcquiredDuringPeriod    
Goodwill purchase accounting adjustments 663,000us-gaap_GoodwillPurchaseAccountingAdjustments    
Minimum [Member]      
Finite-Lived Intangible Assets [Line Items]      
Amortization period, in years 3 years    
Maximum [Member]      
Finite-Lived Intangible Assets [Line Items]      
Amortization period, in years 10 years    
Order Backlog [Member]      
Finite-Lived Intangible Assets [Line Items]      
Amortization expense $ 3,500,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_OrderOrProductionBacklogMember 		   
Amortization period, in years 1 year