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Acquired Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
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Assets eligible for amortization: |  |  |  |
Gross Carrying Amount | $ 16,745 |  | $ 8,448 |
Accumulated Amortization | (1,398) |  | (816) |
Unamortized intangible assets: |  |  |  |
Goodwill | 11,817 | [1] | 7,698 | [1]
Customer Lists [Member] |  |  |  |
Assets eligible for amortization: |  |  |  |
Gross Carrying Amount | 3,933 |  | 750 |
Accumulated Amortization | (1,015) |  | (589) |
Noncompete Agreements [Member] |  |  |  |
Assets eligible for amortization: |  |  |  |
Gross Carrying Amount | 261 |  | 0 |
Accumulated Amortization | (53) |  | 0 |
Software [Member] |  |  |  |
Assets eligible for amortization: |  |  |  |
Gross Carrying Amount | 234 |  | 0 |
Accumulated Amortization | (78) |  | 0 |
Other Intangible Assets [Member] |  |  |  |
Assets eligible for amortization: |  |  |  |
Gross Carrying Amount | 500 |  | 0 |
Accumulated Amortization | (25) |  | 0 |
Goodwill [Member] |  |  |  |
Assets eligible for amortization: |  |  |  |
Accumulated Amortization | $ (227) | [1] | $ (227) | [1]
[1] | Amortization through December 31, 2001 prior to adoption of FASB ASC 350.

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -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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- Definition Gross amount, as of the balance sheet date, of the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable), in excess of the fair value of net assets acquired in one or more business combination transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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