Nominal or face amount used to calculate payment on derivative.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

Name:	us-gaap_DerivativeNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

Note 8 - Derivative Instruments - Summary of Notional Amounts of Outstanding Derivative Positions (Details) $ in Thousands	Dec. 31, 2019 USD ($)	Dec. 31, 2019 PHP (₱)	Dec. 31, 2019 CAD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 PHP (₱)	Dec. 31, 2018 CAD ($)
Notional amount	$ 15,408			$ 22,947
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Philippine Foreign Exchange Contract [Member]
Notional amount	14,361	₱ 769,000		20,996	₱ 1,134,000
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Canadian Foreign Exchange Contract [Member]
Notional amount	$ 1,047		$ 1,400	$ 1,951		$ 2,500