Net Income (Loss) per Share - Narrative (Details) - USD ($)			3 Months Ended		6 Months Ended
	Apr. 24, 2020	Feb. 13, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Class of Stock [Line Items]
Dilutive awards (in shares)			101,000	128,000	108,000	109,000
2016 Equity Plan
Class of Stock [Line Items]
Dilutive awards (in shares)			34,924		33,599
Phantom Share Units (PSUs) | 2016 and 2017 Equity Plans
Class of Stock [Line Items]
Settlement period					5 years
Phantom Share Units (PSUs) | 2016 Equity Plan
Class of Stock [Line Items]
Common stock shares contingently issuable (in shares)					43,580
Restricted Stock Units (RSUs) | 2017 Equity Plan
Class of Stock [Line Items]
Shares to be issued upon settlement of awards (in shares)			97,466		97,466
Dilutive awards (in shares)			36,107		40,612
Common stock shares contingently issuable (in shares)					13,157
Restricted Stock Units (RSUs) | 2017 Equity Plan, February 2020 Award
Class of Stock [Line Items]
Restricted stock unit awards awarded (in shares)		420,303
Stock compensation expense			$ 1,000,000.0		$ 1,500,000
Restricted Stock Units (RSUs) | 2017 Equity Plan, April 2020 Award
Class of Stock [Line Items]
Restricted stock unit awards awarded (in shares)	56,715
Stock compensation expense			$ 639,000		$ 639,000
Service-based RSUs | 2016 Equity Plan
Class of Stock [Line Items]
RSUs excluded from computation of earnings per share (in shares)					52,221
Service-based RSUs | 2017 Equity Plan
Class of Stock [Line Items]
RSUs excluded from computation of earnings per share (in shares)					290,130
Dilutive awards (in shares)			30,109		33,567
Service-based RSUs | 2017 Equity Plan, February 2020 Award
Class of Stock [Line Items]
Vesting period					3 years
Service-based RSUs | 2017 Equity Plan, April 2020 Award
Class of Stock [Line Items]
Vesting period	3 years
Performance and market-based RSUs | 2017 Equity Plan
Class of Stock [Line Items]
RSUs excluded from computation of earnings per share (in shares)					452,052
Performance and market-based RSUs | 2017 Equity Plan, February 2020 Award
Class of Stock [Line Items]
Vesting period					3 years