Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate 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.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Stock Buy Back Program (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Jul. 29, 2018
Share Repurchase Program [Abstract]
Stock repurchased value	$ 13,914			$ 13,914
Share Repurchase Plan [Member]
Share Repurchase Program [Abstract]
Stock repurchase program, authorized amount					$ 150,000
Stock repurchased (in shares)		582	0
Stock repurchased value		$ 24,138