Stock-Based Compensation - Additional Information (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($) vesting_type shares	Dec. 31, 2018 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reserved shares of common stock for possible future issuance	3,100,000
Number of award vesting types \| vesting_type	2
Options granted (in shares)	0	0
Stock-based compensation expense \| $	$ 1,237	$ 966
Cash liability for performance-based units \| $	$ 0
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)	0	0
Options vested (in shares)	0	1,000
Options forfeited in period (in shares)	174,000	76,000
Stock-based compensation expense \| $	$ (100)	$ (700)
Options, nonvested, number of shares (in shares)	85,000
Service Based Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options forfeited in period (in shares)	57,000	17,000
Vesting period (in years)	4 years
Expiration term (in years)	8 years
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense \| $	$ 100
Forfeited (in shares)	75,000	44,000
Options issued (in shares)	31,000	48,000
Restricted Stock [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	2 years
Restricted Stock [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	4 years
Performance Stock Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested (in shares)	0	1,000
Forfeited (in shares)	339,000	117,000
Deferred Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options issued (in shares)	0	6,000
Percentage of shares vested in lieu of directors fees at the grant date	100.00%
Portion of Director fees matched to deferred stock units	25.00%
Vesting period of deferred stock (in years)	1 year
Restricted Stock Unit And Performance Stock Unit And Deferred Stock Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense \| $	$ 1,200	$ 1,000
Vested (in shares)	107,000	121,000
Forfeited (in shares)	414,000	161,000
Compensation cost not yet recognized \| $	$ 1,100
Total fair value of stock-based compensation vested \| $	$ 1,200	$ 1,600
2014 Equity Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance	4,100,000
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense \| $	$ 100

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Gross number of share options (or share units) granted during the period.

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Number of non-vested options outstanding.

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