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Other Real Estate Owned (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Activity in the other real estate owned (OREO) portfolio, net of valuation reserve |  |  |  |
Balance at beginning of period | $ 40,220 | $ 65,663 | $ 41,537 | $ 72,423
Property additions | 4,655 | 4,196 | 9,343 | 11,181
Development improvements | 131 |  | 131 | 50
Less: Property Disposals, net of gains/losses | 4,949 | 7,804 | 10,518 | 19,465
Less: Period valuation adjustments | 825 | 2,590 | 1,261 | 4,724
Balance at end of period | 39,232 | 59,465 | 39,232 | 59,465
Activity in the valuation allowance |  |  |  |
Balance at beginning of period | 19,484 | 30,966 | 22,284 | 31,454
Provision for unrealized losses | 825 | 2,589 | 1,261 | 4,576
Reduction taken on sales | (2,436) | (3,112) | (5,083) | (5,734)
Other adjustments |  | 44 | (589) | 191
Balance at end of period | 17,873 | 30,487 | 17,873 | 30,487
Expenses related to foreclosed assets, net of lease revenue |  |  |  |
Gain on sales, net | (23) | (386) | (409) | (567)
Provision for unrealized losses | 825 | 2,589 | 1,261 | 4,576
Operating expenses | 1,011 | 1,356 | 2,248 | 3,055
Less: Lease revenue | 163 | 257 | 442 | 665
Expenses related to foreclosed assets, net of lease revenue | $ 1,650 | $ 3,302 | $ 2,658 | $ 6,399

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