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Valuation and Qualifying Accounts (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Allowance for doubtful accounts [Member]
      
Valuation allowances and reserves [Roll Forward]      
Balance at Beginning of Period $ 1,166 $ 789 $ 723
Reserves Assumed in Acquisition 496 383 171
Additions Charged to Earnings 1,037 204 (7)
Charges to Reserve, Net (41) [1] (210) [1] (98) [1]
Balance at End of Year 2,658 1,166 789
Reserves for inventory [Member]
      
Valuation allowances and reserves [Roll Forward]      
Balance at Beginning of Period 6,999 4,717 4,059
Reserves Assumed in Acquisition 1,131 1,694 657
Additions Charged to Earnings 72 1,785 1,092
Charges to Reserve, Net (1,644) [1] (1,197) [1] (1,091) [1]
Balance at End of Year 6,558 6,999 4,717
Valuation of deferred tax assets [Member]
      
Valuation allowances and reserves [Roll Forward]      
Balance at Beginning of Period 806 0 271,393
Reserves Assumed in Acquisition (120) 827 0
Additions Charged to Earnings 335 (21) (271,393)
Charges to Reserve, Net 0 [1] 0 [1] 0 [1]
Balance at End of Year $ 1,021 $ 806 $ 0
[1] Deductions from the allowance for doubtful accounts equal accounts receivable written off, less recoveries, against the allowance. Deductions from the reserves for inventory excess and obsolete items equal inventory written off against the reserve as items were disposed of.