Loans Receivable, Part IV (Details) (USD $) | 3 Months Ended | 12 Months Ended | |
Mar. 31, 2015 | Dec. 31, 2013 | Dec. 31, 2014 |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | $1,064,758,000 | | $1,094,990,000 |
Loans requiring an officers' loans committee review and approval, minimum | 500,000 | | |
Minimum amount of potential loan exposure to be reviewed by credit management personnel | 1,000,000 | | |
Maximum period of time loan is reviewed if renewed | 1 year | | |
Period of time sales of real estate owned fair value is based | 2 years | | |
Impaired Loans Receivable, Recorded Investment [Abstract] | | | |
Total Impaired, with Reserve, Recorded Investment | 18,096,000 | | 22,484,000 |
Total Impaired, with no Reserve, Recorded Investment | 26,581,000 | | 28,818,000 |
Total Impaired, Recorded Investment | 44,677,000 | | 51,302,000 |
Impaired Loans Receivable, Unpaid Principal Balance [Abstract] | | | |
Total Impaired with Reserve, Unpaid Principal Balance | 20,045,000 | | 27,386,000 |
Total Impaired with no Reserve, Unpaid Principal Balance | 30,507,000 | | 32,564,000 |
Total Impaired, Unpaid Principal Balance, Total | 50,552,000 | | 59,950,000 |
Impaired Loans Receivable, Reserve [Abstract] | | | |
Total Impaired with Reserve, Reserve | 3,268,000 | | 3,726,000 |
Total Impaired with no Reserve, Reserve | 0 | | 0 |
Impaired Loans, Reserve | 3,268,000 | | 3,726,000 |
Impaired Loans Receivable, Cumulative Charge Offs [Abstract] | | | |
Total Impaired with Reserve, Cumulative Charge-offs | 1,949,000 | | 4,902,000 |
Total Impaired with no Reserve, Cumulative Charge-offs | 3,926,000 | | 3,746,000 |
Total Impaired, Cumulative Charge-offs | 5,875,000 | | 8,648,000 |
Impaired Loans Receivable, Average Recorded Investment [Abstract] | | | |
Total Impaired with Reserve, Average Recorded Investment | 18,150,000 | 33,183,000 | |
Total Impaired with no Reserve, Average Recorded Investment | 27,220,000 | 40,437,000 | |
Total Impaired, Average Recorded Investment, Total | 45,370,000 | 73,620,000 | |
Impaired Loans Receivable, Interest Paid YTD [Abstract] | | | |
Total Impaired with Reserve, Interest Paid YTD | 147,000 | 828,000 | |
Total Impaired with no Reserve, Interest Paid YTD | 294,000 | 1,417,000 | |
Total Impaired, Interest Paid YTD | 441,000 | 2,245,000 | |
Charge-offs recorded to reduce the unpaid principal balance | 3,900,000 | | |
One-to Four-Family [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 397,114,000 | | 411,979,000 |
Impaired Loans Receivable, Recorded Investment [Abstract] | | | |
Total Impaired, with Reserve, Recorded Investment | 13,497,000 | | 11,864,000 |
Total Impaired, with no Reserve, Recorded Investment | 15,860,000 | | 17,645,000 |
Total Impaired, Recorded Investment | 29,357,000 | | 29,509,000 |
Impaired Loans Receivable, Unpaid Principal Balance [Abstract] | | | |
Total Impaired with Reserve, Unpaid Principal Balance | 14,569,000 | | 13,345,000 |
Total Impaired with no Reserve, Unpaid Principal Balance | 17,663,000 | | 19,795,000 |
Total Impaired, Unpaid Principal Balance, Total | 32,232,000 | | 33,140,000 |
Impaired Loans Receivable, Reserve [Abstract] | | | |
Total Impaired with Reserve, Reserve | 2,669,000 | | 2,386,000 |
Total Impaired with no Reserve, Reserve | 0 | | 0 |
Impaired Loans, Reserve | 2,669,000 | | 2,386,000 |
Impaired Loans Receivable, Cumulative Charge Offs [Abstract] | | | |
Total Impaired with Reserve, Cumulative Charge-offs | 1,072,000 | | 1,481,000 |
Total Impaired with no Reserve, Cumulative Charge-offs | 1,803,000 | | 2,150,000 |
Total Impaired, Cumulative Charge-offs | 2,875,000 | | 3,631,000 |
Impaired Loans Receivable, Average Recorded Investment [Abstract] | | | |
Total Impaired with Reserve, Average Recorded Investment | 13,543,000 | 15,982,000 | |
Total Impaired with no Reserve, Average Recorded Investment | 15,964,000 | 23,215,000 | |
Total Impaired, Average Recorded Investment, Total | 29,507,000 | 39,197,000 | |
Impaired Loans Receivable, Interest Paid YTD [Abstract] | | | |
Total Impaired with Reserve, Interest Paid YTD | 109,000 | 515,000 | |
Total Impaired with no Reserve, Interest Paid YTD | 199,000 | 860,000 | |
Total Impaired, Interest Paid YTD | 308,000 | 1,375,000 | |
Over Four-family [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 509,673,000 | | 522,281,000 |
Impaired Loans Receivable, Recorded Investment [Abstract] | | | |
Total Impaired, with Reserve, Recorded Investment | 1,806,000 | | 7,438,000 |
Total Impaired, with no Reserve, Recorded Investment | 8,078,000 | | 8,124,000 |
Total Impaired, Recorded Investment | 9,884,000 | | 15,562,000 |
Impaired Loans Receivable, Unpaid Principal Balance [Abstract] | | | |
Total Impaired with Reserve, Unpaid Principal Balance | 2,260,000 | | 10,285,000 |
Total Impaired with no Reserve, Unpaid Principal Balance | 10,088,000 | | 9,364,000 |
Total Impaired, Unpaid Principal Balance, Total | 12,348,000 | | 19,649,000 |
Impaired Loans Receivable, Reserve [Abstract] | | | |
Total Impaired with Reserve, Reserve | 88,000 | | 731,000 |
Total Impaired with no Reserve, Reserve | 0 | | 0 |
Impaired Loans, Reserve | 88,000 | | 731,000 |
Impaired Loans Receivable, Cumulative Charge Offs [Abstract] | | | |
Total Impaired with Reserve, Cumulative Charge-offs | 454,000 | | 2,847,000 |
Total Impaired with no Reserve, Cumulative Charge-offs | 2,010,000 | | 1,240,000 |
Total Impaired, Cumulative Charge-offs | 2,464,000 | | 4,087,000 |
Impaired Loans Receivable, Average Recorded Investment [Abstract] | | | |
Total Impaired with Reserve, Average Recorded Investment | 1,807,000 | 12,720,000 | |
Total Impaired with no Reserve, Average Recorded Investment | 8,608,000 | 12,693,000 | |
Total Impaired, Average Recorded Investment, Total | 10,415,000 | 25,413,000 | |
Impaired Loans Receivable, Interest Paid YTD [Abstract] | | | |
Total Impaired with Reserve, Interest Paid YTD | 5,000 | 177,000 | |
Total Impaired with no Reserve, Interest Paid YTD | 74,000 | 439,000 | |
Total Impaired, Interest Paid YTD | 79,000 | 616,000 | |
Home Equity [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 27,442,000 | | 29,207,000 |
Impaired Loans Receivable, Recorded Investment [Abstract] | | | |
Total Impaired, with Reserve, Recorded Investment | 176,000 | | 144,000 |
Total Impaired, with no Reserve, Recorded Investment | 309,000 | | 445,000 |
Total Impaired, Recorded Investment | 485,000 | | 589,000 |
Impaired Loans Receivable, Unpaid Principal Balance [Abstract] | | | |
Total Impaired with Reserve, Unpaid Principal Balance | 176,000 | | 144,000 |
Total Impaired with no Reserve, Unpaid Principal Balance | 309,000 | | 445,000 |
Total Impaired, Unpaid Principal Balance, Total | 485,000 | | 589,000 |
Impaired Loans Receivable, Reserve [Abstract] | | | |
Total Impaired with Reserve, Reserve | 63,000 | | 63,000 |
Total Impaired with no Reserve, Reserve | 0 | | 0 |
Impaired Loans, Reserve | 63,000 | | 63,000 |
Impaired Loans Receivable, Cumulative Charge Offs [Abstract] | | | |
Total Impaired with Reserve, Cumulative Charge-offs | 0 | | 0 |
Total Impaired with no Reserve, Cumulative Charge-offs | 0 | | 0 |
Total Impaired, Cumulative Charge-offs | 0 | | 0 |
Impaired Loans Receivable, Average Recorded Investment [Abstract] | | | |
Total Impaired with Reserve, Average Recorded Investment | 176,000 | 195,000 | |
Total Impaired with no Reserve, Average Recorded Investment | 311,000 | 554,000 | |
Total Impaired, Average Recorded Investment, Total | 487,000 | 749,000 | |
Impaired Loans Receivable, Interest Paid YTD [Abstract] | | | |
Total Impaired with Reserve, Interest Paid YTD | 3,000 | 7,000 | |
Total Impaired with no Reserve, Interest Paid YTD | 3,000 | 15,000 | |
Total Impaired, Interest Paid YTD | 6,000 | 22,000 | |
Construction and Land [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 13,678,000 | | 17,081,000 |
Impaired Loans Receivable, Recorded Investment [Abstract] | | | |
Total Impaired, with Reserve, Recorded Investment | 47,000 | | 47,000 |
Total Impaired, with no Reserve, Recorded Investment | 2,302,000 | | 2,219,000 |
Total Impaired, Recorded Investment | 2,349,000 | | 2,266,000 |
Impaired Loans Receivable, Unpaid Principal Balance [Abstract] | | | |
Total Impaired with Reserve, Unpaid Principal Balance | 61,000 | | 61,000 |
Total Impaired with no Reserve, Unpaid Principal Balance | 2,415,000 | | 2,332,000 |
Total Impaired, Unpaid Principal Balance, Total | 2,476,000 | | 2,393,000 |
Impaired Loans Receivable, Reserve [Abstract] | | | |
Total Impaired with Reserve, Reserve | 16,000 | | 13,000 |
Total Impaired with no Reserve, Reserve | 0 | | 0 |
Impaired Loans, Reserve | 16,000 | | 13,000 |
Impaired Loans Receivable, Cumulative Charge Offs [Abstract] | | | |
Total Impaired with Reserve, Cumulative Charge-offs | 14,000 | | 14,000 |
Total Impaired with no Reserve, Cumulative Charge-offs | 113,000 | | 113,000 |
Total Impaired, Cumulative Charge-offs | 127,000 | | 127,000 |
Impaired Loans Receivable, Average Recorded Investment [Abstract] | | | |
Total Impaired with Reserve, Average Recorded Investment | 47,000 | 63,000 | |
Total Impaired with no Reserve, Average Recorded Investment | 2,304,000 | 3,379,000 | |
Total Impaired, Average Recorded Investment, Total | 2,351,000 | 3,442,000 | |
Impaired Loans Receivable, Interest Paid YTD [Abstract] | | | |
Total Impaired with Reserve, Interest Paid YTD | 0 | 0 | |
Total Impaired with no Reserve, Interest Paid YTD | 18,000 | 97,000 | |
Total Impaired, Interest Paid YTD | 18,000 | 97,000 | |
Commercial Real Estate [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 95,504,000 | | 94,771,000 |
Impaired Loans Receivable, Recorded Investment [Abstract] | | | |
Total Impaired, with Reserve, Recorded Investment | 2,564,000 | | 2,984,000 |
Total Impaired, with no Reserve, Recorded Investment | 0 | | 93,000 |
Total Impaired, Recorded Investment | 2,564,000 | | 3,077,000 |
Impaired Loans Receivable, Unpaid Principal Balance [Abstract] | | | |
Total Impaired with Reserve, Unpaid Principal Balance | 2,973,000 | | 3,544,000 |
Total Impaired with no Reserve, Unpaid Principal Balance | 0 | | 93,000 |
Total Impaired, Unpaid Principal Balance, Total | 2,973,000 | | 3,637,000 |
Impaired Loans Receivable, Reserve [Abstract] | | | |
Total Impaired with Reserve, Reserve | 426,000 | | 526,000 |
Total Impaired with no Reserve, Reserve | 0 | | 0 |
Impaired Loans, Reserve | 426,000 | | 526,000 |
Impaired Loans Receivable, Cumulative Charge Offs [Abstract] | | | |
Total Impaired with Reserve, Cumulative Charge-offs | 409,000 | | 560,000 |
Total Impaired with no Reserve, Cumulative Charge-offs | 0 | | 0 |
Total Impaired, Cumulative Charge-offs | 409,000 | | 560,000 |
Impaired Loans Receivable, Average Recorded Investment [Abstract] | | | |
Total Impaired with Reserve, Average Recorded Investment | 2,570,000 | 4,211,000 | |
Total Impaired with no Reserve, Average Recorded Investment | 0 | 126,000 | |
Total Impaired, Average Recorded Investment, Total | 2,570,000 | 4,337,000 | |
Impaired Loans Receivable, Interest Paid YTD [Abstract] | | | |
Total Impaired with Reserve, Interest Paid YTD | 30,000 | 128,000 | |
Total Impaired with no Reserve, Interest Paid YTD | 0 | 4,000 | |
Total Impaired, Interest Paid YTD | 30,000 | 132,000 | |
Consumer [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 268,000 | | 200,000 |
Impaired Loans Receivable, Recorded Investment [Abstract] | | | |
Total Impaired, with Reserve, Recorded Investment | 0 | | 0 |
Total Impaired, with no Reserve, Recorded Investment | 0 | | 0 |
Total Impaired, Recorded Investment | 0 | | 0 |
Impaired Loans Receivable, Unpaid Principal Balance [Abstract] | | | |
Total Impaired with Reserve, Unpaid Principal Balance | 0 | | 0 |
Total Impaired with no Reserve, Unpaid Principal Balance | 0 | | 0 |
Total Impaired, Unpaid Principal Balance, Total | 0 | | 0 |
Impaired Loans Receivable, Reserve [Abstract] | | | |
Total Impaired with Reserve, Reserve | 0 | | 0 |
Total Impaired with no Reserve, Reserve | 0 | | 0 |
Impaired Loans, Reserve | 0 | | 0 |
Impaired Loans Receivable, Cumulative Charge Offs [Abstract] | | | |
Total Impaired with Reserve, Cumulative Charge-offs | 0 | | 0 |
Total Impaired with no Reserve, Cumulative Charge-offs | 0 | | 0 |
Total Impaired, Cumulative Charge-offs | 0 | | 0 |
Impaired Loans Receivable, Average Recorded Investment [Abstract] | | | |
Total Impaired with Reserve, Average Recorded Investment | 0 | 0 | |
Total Impaired with no Reserve, Average Recorded Investment | 0 | 0 | |
Total Impaired, Average Recorded Investment, Total | 0 | 0 | |
Impaired Loans Receivable, Interest Paid YTD [Abstract] | | | |
Total Impaired with Reserve, Interest Paid YTD | 0 | 0 | |
Total Impaired with no Reserve, Interest Paid YTD | 0 | 0 | |
Total Impaired, Interest Paid YTD | 0 | 0 | |
Commercial Loans [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 21,079,000 | | 19,471,000 |
Impaired Loans Receivable, Recorded Investment [Abstract] | | | |
Total Impaired, with Reserve, Recorded Investment | 6,000 | | 7,000 |
Total Impaired, with no Reserve, Recorded Investment | 32,000 | | 292,000 |
Total Impaired, Recorded Investment | 38,000 | | 299,000 |
Impaired Loans Receivable, Unpaid Principal Balance [Abstract] | | | |
Total Impaired with Reserve, Unpaid Principal Balance | 6,000 | | 7,000 |
Total Impaired with no Reserve, Unpaid Principal Balance | 32,000 | | 535,000 |
Total Impaired, Unpaid Principal Balance, Total | 38,000 | | 542,000 |
Impaired Loans Receivable, Reserve [Abstract] | | | |
Total Impaired with Reserve, Reserve | 6,000 | | 7,000 |
Total Impaired with no Reserve, Reserve | 0 | | 0 |
Impaired Loans, Reserve | 6,000 | | 7,000 |
Impaired Loans Receivable, Cumulative Charge Offs [Abstract] | | | |
Total Impaired with Reserve, Cumulative Charge-offs | 0 | | 0 |
Total Impaired with no Reserve, Cumulative Charge-offs | 0 | | 243,000 |
Total Impaired, Cumulative Charge-offs | 0 | | 243,000 |
Impaired Loans Receivable, Average Recorded Investment [Abstract] | | | |
Total Impaired with Reserve, Average Recorded Investment | 7,000 | 12,000 | |
Total Impaired with no Reserve, Average Recorded Investment | 33,000 | 470,000 | |
Total Impaired, Average Recorded Investment, Total | 40,000 | 482,000 | |
Impaired Loans Receivable, Interest Paid YTD [Abstract] | | | |
Total Impaired with Reserve, Interest Paid YTD | 0 | 1,000 | |
Total Impaired with no Reserve, Interest Paid YTD | 0 | 2,000 | |
Total Impaired, Interest Paid YTD | 0 | 3,000 | |
Substandard [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 42,877,000 | | 47,849,000 |
Substandard [Member] | One-to Four-Family [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 29,566,000 | | 28,945,000 |
Substandard [Member] | Over Four-family [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 7,603,000 | | 12,638,000 |
Substandard [Member] | Home Equity [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 758,000 | | 624,000 |
Substandard [Member] | Construction and Land [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 2,349,000 | | 2,266,000 |
Substandard [Member] | Commercial Real Estate [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 2,564,000 | | 3,077,000 |
Substandard [Member] | Consumer [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 0 | | 0 |
Substandard [Member] | Commercial Loans [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 37,000 | | 299,000 |
Watch [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 18,888,000 | | 22,530,000 |
Watch [Member] | One-to Four-Family [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 7,929,000 | | 10,779,000 |
Watch [Member] | Over Four-family [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 6,491,000 | | 7,070,000 |
Watch [Member] | Home Equity [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 284,000 | | 278,000 |
Watch [Member] | Construction and Land [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 1,372,000 | | 1,377,000 |
Watch [Member] | Commercial Real Estate [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 2,362,000 | | 2,186,000 |
Watch [Member] | Consumer [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 0 | | 0 |
Watch [Member] | Commercial Loans [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 450,000 | | 840,000 |
Pass [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 1,002,993,000 | | 1,024,611,000 |
Pass [Member] | One-to Four-Family [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 359,619,000 | | 372,255,000 |
Pass [Member] | Over Four-family [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 495,579,000 | | 502,573,000 |
Pass [Member] | Home Equity [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 26,400,000 | | 28,305,000 |
Pass [Member] | Construction and Land [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 9,957,000 | | 13,438,000 |
Pass [Member] | Commercial Real Estate [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 90,578,000 | | 89,508,000 |
Pass [Member] | Consumer [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | 268,000 | | 200,000 |
Pass [Member] | Commercial Loans [Member] | | | |
Loans Receivable, Recorded Investment [Line Items] | | | |
Loans receivable, net | $20,592,000 | | $18,332,000 |