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Other Intangible Assets (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 Permit | Mar. 31, 2013 | Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | $ 5,335,000 |  | $ 5,318,000
Accumulated Amortization | (2,501,000) |  | (2,338,000)
Net Carrying Amount | 2,834,000 |  | 2,980,000
Finite lived intangible assets future amortization expense [Abstract] |  |  |
2014 (remaining) | 401,000 |  |
2015 | 492,000 |  |
2016 | 419,000 |  |
2017 | 385,000 |  |
2018 | 355,000 |  |
Total | 2,052,000 |  |
Amortization period of definite-lived intangible asset | 5 years |  |
Number of definite lived permit | 1 |  |
Amortization expense of intangible assets | 176,000 | 164,000 |
Patent [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 523,000 |  | 514,000
Accumulated Amortization | (162,000) |  | (155,000)
Net Carrying Amount | 361,000 |  | 359,000
Patent [Member] | Minimum [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Useful Lives | 8 years |  |
Patent [Member] | Maximum [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Useful Lives | 18 years |  |
Software [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Useful Lives | 3 years |  |
Gross Carrying Amount | 387,000 |  | 379,000
Accumulated Amortization | (281,000) |  | (258,000)
Net Carrying Amount | 106,000 |  | 121,000
Non-compete Agreement [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Useful Lives | 1 year 2 months 12 days |  |
Gross Carrying Amount | 265,000 |  | 265,000
Accumulated Amortization | (213,000) |  | (174,000)
Net Carrying Amount | 52,000 |  | 91,000
Customer Contracts [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Useful Lives | 0 years 6 months |  |
Gross Carrying Amount | 790,000 |  | 790,000
Accumulated Amortization | (790,000) |  | (790,000)
Net Carrying Amount | 0 |  | 0
Customer Relationships [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Useful Lives | 12 years |  |
Gross Carrying Amount | 3,370,000 |  | 3,370,000
Accumulated Amortization | (1,055,000) |  | (961,000)
Net Carrying Amount | $ 2,315,000 |  | $ 2,409,000

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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