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Deposits (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Deposits [Line Items]
Deposits	$ 1,566,199	$ 1,577,231
Average balance, deposits	$ 1,606,858	$ 1,496,982
Deposits, weighted average interest rate during the period	0.74%	0.73%
Non-interest-bearing transaction accounts
Deposits [Line Items]
Deposits	$ 258,423	$ 231,199
Average balance, deposits	$ 246,238	$ 211,945
Deposits, weighted average interest rate during the period	0.00%	0.00%
Interest-bearing transaction accounts
Deposits [Line Items]
Deposits	$ 192,482	$ 165,921
Average balance, deposits	$ 164,278	$ 125,558
Deposits, weighted average interest rate during the period	0.22%	0.24%
Money market accounts
Deposits [Line Items]
Deposits	$ 603,872	$ 612,642
Average balance, deposits	$ 650,864	$ 602,842
Deposits, weighted average interest rate during the period	0.50%	0.55%
Certificates of deposit
Deposits [Line Items]
Deposits	$ 62,197	$ 79,986
Average balance, deposits	$ 67,440	$ 106,177
Deposits, weighted average interest rate during the period	0.88%	0.78%
Wholesale deposits
Deposits [Line Items]
Deposits	$ 449,225	$ 487,483
Average balance, deposits	$ 478,038	$ 450,460
Deposits, weighted average interest rate during the period	1.61%	1.43%

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- Definition

Average Balance, Deposits

+ References

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- Definition

Deposits, Weighted Average Interest Rate During the Period

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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