Other Investments - Financial Information for Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Deluxe
Related Party Transaction [Line Items]
Revenue from related parties	$ 1,067	$ 878	$ 3,340	$ 2,632
Due to related parties		750		750	$ 631
Broadband Connectivity Solutions
Related Party Transaction [Line Items]
Revenue from related parties	2,190	$ 1,690	6,643	$ 6,236
Due to related parties	$ 6,981		$ 6,981		$ 5,171

For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant