Stock-based Compensation Plans Grants Table (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture	$ 11,900
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares	7,127	82,565	129,081
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 13.32	$ 12.81	$ 11.86
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture	$ 100	$ 1,100	$ 1,500
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares	32,916	35,325	40,286
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 2.52	$ 2.24	$ 1.92
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture	$ 100	$ 100	$ 100
Phantom Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares	3,567	1,254	180,987
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 14.29	$ 11.94	$ 11.86
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture	$ 100	$ 0	$ 2,100
Market Based Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares		4,187	234,199
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 14.26	$ 15.39
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture		$ 100	$ 3,600
Equity Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares		8,115	423,405
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 3.08	$ 3.05
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture		$ 0	$ 1,300
Share-based Payment Arrangement, Tranche Two [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares			60,019
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 11.86
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture			$ 700
Share-based Payment Arrangement, Tranche Three [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares			84,483
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 11.86
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture			$ 1,000

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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