Income Taxes - Tax Credit Carryforward (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Operating Loss Carryforwards
2020	$ 12,977
2021	15,016
2022	1,072
2023	7,391
2024	3,598
Thereafter	24,800
Tax credit carryforward	64,854
EZ Credit
Operating Loss Carryforwards
2020	0
2021	0
2022	0
2023	0
2024	0
Thereafter	68
Tax credit carryforward	68
R & E credit
Operating Loss Carryforwards
2020	0
2021	0
2022	0
2023	0
2024	0
Thereafter	9,047
Tax credit carryforward	9,047
Foreign Tax Credit
Operating Loss Carryforwards
2020	12,975
2021	14,990
2022	1,061
2023	5,735
2024	3,514
Thereafter	8,801
Tax credit carryforward	47,076
Work Opportunity & Welfare to Work Credit
Operating Loss Carryforwards
2020	0
2021	0
2022	0
2023	0
2024	0
Thereafter	6,696
Tax credit carryforward	6,696
State Investment Tax Credits
Operating Loss Carryforwards
2020	2
2021	26
2022	11
2023	1,656
2024	84
Thereafter	86
Tax credit carryforward	1,865
Tip Credit
Operating Loss Carryforwards
2020	0
2021	0
2022	0
2023	0
2024	0
Thereafter	102
Tax credit carryforward	$ 102