Fair Value Measurements - (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financial assets:
Securities available for sale	$ 737,006	$ 674,248
Trust preferred securities
Financial assets:
Securities available for sale	16,992	18,389
Other debt securities
Financial assets:
Securities available for sale	22,901	22,145
Obligations of other U.S. Government agencies and corporations
Financial assets:
Securities available for sale	2,134	2,158
Government agency mortgage backed securities \| Residential mortgage-backed securities
Financial assets:
Securities available for sale	420,877	409,317
Government agency mortgage backed securities \| Commercial mortgage-backed securities
Financial assets:
Securities available for sale	51,053	50,863
Government agency collateralized mortgage obligations \| Residential mortgage-backed securities
Financial assets:
Securities available for sale	221,295	168,826
Government agency collateralized mortgage obligations \| Commercial mortgage-backed securities
Financial assets:
Securities available for sale	1,754	2,550
Recurring
Financial assets:
Securities available for sale	737,006	674,248
Derivative instruments	6,786	9,108
Total financial assets	976,190	861,222
Financial liabilities:
Derivative instruments	5,881	5,910
Total financial liabilities	5,881	5,910
Recurring \| Interest rate swaps
Financial liabilities:
Derivative instruments	3,404	3,410
Recurring \| Interest rate contracts
Financial assets:
Derivative instruments	1,882	1,985
Financial liabilities:
Derivative instruments	1,882	1,985
Recurring \| Interest rate lock commitments
Financial assets:
Derivative instruments	3,781	2,643
Financial liabilities:
Derivative instruments	70	246
Recurring \| Forward commitments
Financial assets:
Derivative instruments	1,123	4,480
Financial liabilities:
Derivative instruments	525	269
Recurring \| Mortgage loans held for sale
Financial assets:
Mortgage loans held for sale	232,398	177,866
Recurring \| Trust preferred securities
Financial assets:
Securities available for sale	16,992	18,389
Recurring \| Other debt securities
Financial assets:
Securities available for sale	22,901	22,145
Recurring \| Obligations of other U.S. Government agencies and corporations
Financial assets:
Securities available for sale	2,134	2,158
Recurring \| Government agency mortgage backed securities \| Residential mortgage-backed securities
Financial assets:
Securities available for sale	420,877	409,317
Recurring \| Government agency mortgage backed securities \| Commercial mortgage-backed securities
Financial assets:
Securities available for sale	51,053	50,863
Recurring \| Government agency collateralized mortgage obligations \| Residential mortgage-backed securities
Financial assets:
Securities available for sale	221,295	168,826
Recurring \| Government agency collateralized mortgage obligations \| Commercial mortgage-backed securities
Financial assets:
Securities available for sale	1,754	2,550
Recurring \| Level 1
Financial assets:
Securities available for sale	0	0
Derivative instruments	0	0
Total financial assets	0	0
Financial liabilities:
Derivative instruments	0	0
Total financial liabilities	0	0
Recurring \| Level 1 \| Interest rate swaps
Financial liabilities:
Derivative instruments	0	0
Recurring \| Level 1 \| Interest rate contracts
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring \| Level 1 \| Interest rate lock commitments
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring \| Level 1 \| Forward commitments
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring \| Level 1 \| Mortgage loans held for sale
Financial assets:
Mortgage loans held for sale	0	0
Recurring \| Level 1 \| Trust preferred securities
Financial assets:
Securities available for sale	0	0
Recurring \| Level 1 \| Other debt securities
Financial assets:
Securities available for sale	0	0
Recurring \| Level 1 \| Obligations of other U.S. Government agencies and corporations
Financial assets:
Securities available for sale	0	0
Recurring \| Level 1 \| Government agency mortgage backed securities \| Residential mortgage-backed securities
Financial assets:
Securities available for sale	0	0
Recurring \| Level 1 \| Government agency mortgage backed securities \| Commercial mortgage-backed securities
Financial assets:
Securities available for sale	0	0
Recurring \| Level 1 \| Government agency collateralized mortgage obligations \| Residential mortgage-backed securities
Financial assets:
Securities available for sale	0	0
Recurring \| Level 1 \| Government agency collateralized mortgage obligations \| Commercial mortgage-backed securities
Financial assets:
Securities available for sale	0	0
Recurring \| Level 2
Financial assets:
Securities available for sale	720,014	655,859
Derivative instruments	6,786	9,108
Total financial assets	959,198	842,833
Financial liabilities:
Derivative instruments	5,881	5,910
Total financial liabilities	5,881	5,910
Recurring \| Level 2 \| Interest rate swaps
Financial liabilities:
Derivative instruments	3,404	3,410
Recurring \| Level 2 \| Interest rate contracts
Financial assets:
Derivative instruments	1,882	1,985
Financial liabilities:
Derivative instruments	1,882	1,985
Recurring \| Level 2 \| Interest rate lock commitments
Financial assets:
Derivative instruments	3,781	2,643
Financial liabilities:
Derivative instruments	70	246
Recurring \| Level 2 \| Forward commitments
Financial assets:
Derivative instruments	1,123	4,480
Financial liabilities:
Derivative instruments	525	269
Recurring \| Level 2 \| Mortgage loans held for sale
Financial assets:
Mortgage loans held for sale	232,398	177,866
Recurring \| Level 2 \| Trust preferred securities
Financial assets:
Securities available for sale	0	0
Recurring \| Level 2 \| Other debt securities
Financial assets:
Securities available for sale	22,901	22,145
Recurring \| Level 2 \| Obligations of other U.S. Government agencies and corporations
Financial assets:
Securities available for sale	2,134	2,158
Recurring \| Level 2 \| Government agency mortgage backed securities \| Residential mortgage-backed securities
Financial assets:
Securities available for sale	420,877	409,317
Recurring \| Level 2 \| Government agency mortgage backed securities \| Commercial mortgage-backed securities
Financial assets:
Securities available for sale	51,053	50,863
Recurring \| Level 2 \| Government agency collateralized mortgage obligations \| Residential mortgage-backed securities
Financial assets:
Securities available for sale	221,295	168,826
Recurring \| Level 2 \| Government agency collateralized mortgage obligations \| Commercial mortgage-backed securities
Financial assets:
Securities available for sale	1,754	2,550
Recurring \| Level 3
Financial assets:
Securities available for sale	16,992	18,389
Derivative instruments	0	0
Total financial assets	16,992	18,389
Financial liabilities:
Derivative instruments	0	0
Total financial liabilities	0	0
Recurring \| Level 3 \| Interest rate swaps
Financial liabilities:
Derivative instruments	0	0
Recurring \| Level 3 \| Interest rate contracts
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring \| Level 3 \| Interest rate lock commitments
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring \| Level 3 \| Forward commitments
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring \| Level 3 \| Mortgage loans held for sale
Financial assets:
Mortgage loans held for sale	0	0
Recurring \| Level 3 \| Trust preferred securities
Financial assets:
Securities available for sale	16,992	18,389
Recurring \| Level 3 \| Other debt securities
Financial assets:
Securities available for sale	0	0
Recurring \| Level 3 \| Obligations of other U.S. Government agencies and corporations
Financial assets:
Securities available for sale	0	0
Recurring \| Level 3 \| Government agency mortgage backed securities \| Residential mortgage-backed securities
Financial assets:
Securities available for sale	0	0
Recurring \| Level 3 \| Government agency mortgage backed securities \| Commercial mortgage-backed securities
Financial assets:
Securities available for sale	0	0
Recurring \| Level 3 \| Government agency collateralized mortgage obligations \| Residential mortgage-backed securities
Financial assets:
Securities available for sale	0	0
Recurring \| Level 3 \| Government agency collateralized mortgage obligations \| Commercial mortgage-backed securities
Financial assets:
Securities available for sale	$ 0	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Fair value of financial and nonfinancial obligations.

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