- Securities Available-for-Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, amortized cost	$ 1,051,128	$ 719,607
Securities available-for-sale, gross unrealized gains	3,688	1,795
Securities available-for-sale, gross unrealized (losses)	(20,058)	(10,832)
Securities available for sale, at fair value	1,034,758	710,570
U.S. government and agency obligations
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, amortized cost	54,821	39,909
Securities available-for-sale, gross unrealized gains	53	17
Securities available-for-sale, gross unrealized (losses)	(717)	(282)
Securities available for sale, at fair value	54,157	39,644
Mortgage-backed securities and collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, amortized cost	934,631	615,924
Securities available-for-sale, gross unrealized gains	2,812	383
Securities available-for-sale, gross unrealized (losses)	(17,436)	(9,695)
Securities available for sale, at fair value	920,007	606,612
Municipal obligations
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, amortized cost	987	1,957
Securities available-for-sale, gross unrealized gains	0	0
Securities available-for-sale, gross unrealized (losses)	0	0
Securities available for sale, at fair value	987	1,957
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, amortized cost	54,493	54,489
Securities available-for-sale, gross unrealized gains	129	536
Securities available-for-sale, gross unrealized (losses)	(1,155)	(511)
Securities available for sale, at fair value	53,467	54,514
Trust preferred securities
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, amortized cost	5,000	5,000
Securities available-for-sale, gross unrealized gains	0	0
Securities available-for-sale, gross unrealized (losses)	(750)	(344)
Securities available for sale, at fair value	4,250	4,656
Equity securities
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, amortized cost	1,196	2,328
Securities available-for-sale, gross unrealized gains	694	859
Securities available-for-sale, gross unrealized (losses)	0	0
Securities available for sale, at fair value	$ 1,890	$ 3,187

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

No definition available.

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- Definition

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563

+ Details

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- Definition

Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

No definition available.

+ Details

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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