Commitments and Contingencies; Litigation Settlement (Details) $ in Thousands		3 Months Ended
	Mar. 28, 2018	Sep. 30, 2019 USD ($)	Jun. 30, 2015 plaintiff
Securities Litigation Case
Commitments and Contingencies
The number of patents involved in lawsuit | plaintiff			2
Heckermann Montross Suit
Commitments and Contingencies
Period after final judgment the stay is lifted	30 days
CPI Card Group Inc. v. Multi Packaging Solutions, Inc., et al. Second Case | Settled Litigation
Commitments and Contingencies
Proceeds from settlements | $		$ 6,000