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Stockholders' Equity (Narratives) (Details) (USD $)
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12 Months Ended |
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Instrument Stock Repurchase Plan [Member]
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| Stock Repurchase [Line Items] |
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| Stock Repurchase Program, Authorized Amount |
$ 15,000,000 |
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| Stock Repurchase Program, Remaining Authorized Repurchase Amount |
5,100,000 |
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| Stock Repurchased During Period, Shares |
231 |
33,546 |
400,475 |
| Stock Repurchased During Period, Average Cost Per Share |
$ 18.52 |
$ 17.91 |
$ 11.74 |
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Instrument Equity Compensation Plan [Member]
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| Stock Repurchase [Line Items] |
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| Stock Repurchased During Period, Shares |
53,757 |
111,769 |
144,291 |
| Stock Repurchased During Period, Average Cost Per Share |
$ 21.65 |
$ 14.21 |
$ 12.12 |
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Marlin Business Services Corp. [Member]
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| Regulatory Capital Requirements Miscellaneous Information [Line Items] |
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| Total stockholders equity (regulatory) |
163,236,000 |
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| Total Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets |
8.00% |
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| Tier One Leverage Capital Required Of Highest Rated Bank Holding Companies For Capital Adequacy To Average Assets |
25.90% |
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| Tier One Leverage Capital Required for Capital Adequacy to Average Assets |
4.00% |
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| FDIC Agreement Capital Required To Be Well Capitalized To Risk Weighted Assets |
3.00% |
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| Total Risk Based Capital to Risk Weighted Assets |
27.15% |
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MBB [Member]
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| Regulatory Capital Requirements Miscellaneous Information [Line Items] |
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| Total stockholders equity (regulatory) |
$ 95,454,000 |
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| Total Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets |
15.00% |
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| Tier One Leverage Capital Required Of Highest Rated Bank Holding Companies For Capital Adequacy To Average Assets |
16.38% |
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| Tier One Leverage Capital Required for Capital Adequacy to Average Assets |
5.00% |
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| FDIC Agreement Capital Required To Be Well Capitalized To Risk Weighted Assets |
15.00% |
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| Total Risk Based Capital to Risk Weighted Assets |
17.63% |
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