Share Repurchases (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Oct. 31, 2018
Equity, Class of Treasury Stock [Line Items]
Number of common stock repurchased (in shares)	139,782	300,000
Value of common stock repurchased	$ 2,522	$ 7,448
Common stock authorized for repurchase			$ 13,600
Maximum
Equity, Class of Treasury Stock [Line Items]
Common stock authorized for repurchase			$ 20,000

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration