Fair Value Measurements - Assets and Liabilities Measured at Fair Value, Recurring (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net fair value adjustments for interest rate caps	$ 0	$ 9,000
Assets:
Securities available for sale, at fair value	705,751,000	704,403,000
Transfers between levels 1, 2 and 3	0
GSE collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	274,101,000	254,912,000
Mortgage-backed securities
Assets:
Securities available for sale, at fair value	404,996,000	425,540,000
Trust preferred securities
Assets:
Securities available for sale, at fair value	3,697,000	3,837,000
Municipal bonds
Assets:
Securities available for sale, at fair value	5,936,000	5,118,000
Mutual funds
Assets:
Securities available for sale, at fair value	17,021,000	14,996,000
Recurring basis \| Estimate of Fair Value \| GSE collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	274,101,000	254,912,000
Recurring basis \| Estimate of Fair Value \| Mortgage-backed securities
Assets:
Securities available for sale, at fair value	404,996,000	425,540,000
Recurring basis \| Estimate of Fair Value \| Trust preferred securities
Assets:
Securities available for sale, at fair value	3,697,000	3,837,000
Recurring basis \| Estimate of Fair Value \| Municipal bonds
Assets:
Securities available for sale, at fair value	5,936,000	5,118,000
Recurring basis \| Estimate of Fair Value \| Mutual funds
Assets:
Securities available for sale, at fair value	17,021,000	14,996,000
Recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| GSE collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	0	0
Recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Mortgage-backed securities
Assets:
Securities available for sale, at fair value	0	0
Recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Trust preferred securities
Assets:
Securities available for sale, at fair value	0	0
Recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Municipal bonds
Assets:
Securities available for sale, at fair value	0	0
Recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Mutual funds
Assets:
Securities available for sale, at fair value	17,021,000	14,996,000
Recurring basis \| Significant Other Observable Inputs (Level 2) \| GSE collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	274,101,000	254,912,000
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Mortgage-backed securities
Assets:
Securities available for sale, at fair value	404,996,000	425,540,000
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Trust preferred securities
Assets:
Securities available for sale, at fair value	3,697,000	3,837,000
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Municipal bonds
Assets:
Securities available for sale, at fair value	4,824,000	5,118,000
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Mutual funds
Assets:
Securities available for sale, at fair value	0	0
Recurring basis \| Significant Unobservable Inputs (Level 3) \| GSE collateralized mortgage obligations
Assets:
Securities available for sale, at fair value	0	0
Recurring basis \| Significant Unobservable Inputs (Level 3) \| Mortgage-backed securities
Assets:
Securities available for sale, at fair value	0	0
Recurring basis \| Significant Unobservable Inputs (Level 3) \| Trust preferred securities
Assets:
Securities available for sale, at fair value	0	0
Recurring basis \| Significant Unobservable Inputs (Level 3) \| Municipal bonds
Assets:
Securities available for sale, at fair value	1,112,000	0
Recurring basis \| Significant Unobservable Inputs (Level 3) \| Mutual funds
Assets:
Securities available for sale, at fair value	$ 0	$ 0