|
Basis of presentation and summary of significant accounting policies (Details) (USD $)
|
12 Months Ended |
|
|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Jun. 30, 2013
|
Dec. 31, 2011
|
| Accounting Policies [Line Items] |
|
|
|
|
|
|
| Transfer to other real estate |
$ 200,000 |
|
$ 2,100,000 |
$ 1,300,000 |
|
|
| Interest paid |
8,100,000 |
|
3,000,000 |
5,100,000 |
|
|
| Income taxes paid |
0 |
|
100,000 |
100,000 |
|
|
| Trading securities |
0 |
|
0 |
0 |
|
|
| Sale of excess capital stock |
8,812 |
|
3,722 |
|
|
|
| Proceeds from sale of federal reserve stock |
900,000 |
|
400,000 |
|
|
|
| Threshold period past due for financing receivables |
90 days |
|
|
|
|
|
| Loans and leases receivable, allowance |
22,053,000 |
|
20,857,000 |
|
|
|
| MSRs |
2,248,000 |
|
2,232,000 |
1,308,000 |
|
|
| Bank owned life insurance |
53,449,000 |
|
36,567,000 |
|
|
|
| Other real estate owned (OREO), net |
3,309,000 |
|
3,144,000 |
6,552,000 |
|
21,270,000 |
| Advertising expense |
900,000 |
|
1,000,000 |
1,000,000 |
|
|
| Deferred tax assets, valuation allowance |
(78,000) |
|
(74,000) |
(41,700,000) |
|
|
| Previously written off section 382 deferred tax benefits |
|
|
|
|
8,500,000 |
|
| Swap fee income |
1,847,000 |
|
430,000 |
0 |
|
|
| Interest rate swap derivatives |
4,828,000 |
|
|
|
|
|
| Derivative notional amount |
82,900,000 |
|
16,000,000 |
|
|
|
| Assets held-in-trust |
58,500,000 |
|
59,600,000 |
|
|
|
| Preferred stock, shares authorized |
5,000,000 |
|
5,000,000 |
|
|
|
| Preferred stock, shares issues |
0 |
|
0 |
|
|
|
| Preferred stock, shares outstanding |
0 |
|
0 |
|
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
|
|
|
| Core deposit intangible, net |
7,683,000 |
|
529,000 |
|
|
|
| Core Deposits |
|
|
|
|
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
|
|
|
| Core deposit intangible, net |
7,683,000 |
|
529,000 |
0 |
|
|
| One-to-Four Family Loans |
|
|
|
|
|
|
| Accounting Policies [Line Items] |
|
|
|
|
|
|
| Threshold period for one-to-four family loans to be deemed current |
90 days |
|
|
|
|
|
| Separate Account BOLI |
|
|
|
|
|
|
| Accounting Policies [Line Items] |
|
|
|
|
|
|
| Bank owned life insurance |
28,300,000 |
|
27,900,000 |
|
|
|
| General Account BOLI |
|
|
|
|
|
|
| Accounting Policies [Line Items] |
|
|
|
|
|
|
| Bank owned life insurance |
25,100,000 |
|
8,700,000 |
|
|
|
| Unfunded Lending Commitments |
|
|
|
|
|
|
| Accounting Policies [Line Items] |
|
|
|
|
|
|
| Loans and leases receivable, allowance |
440,000 |
|
440,000 |
440,000 |
|
1,550,000 |
| Interest Rate Swap |
|
|
|
|
|
|
| Accounting Policies [Line Items] |
|
|
|
|
|
|
| Interest rate swap derivatives |
4,800,000 |
[1] |
|
|
|
|
| Interest rate swap derivatives |
$ 4,800,000 |
|
|
|
|
|
|
|
|