Equity - Summary of Restricted Stock Units Awarded (Detail) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |
Dec. 31, 2021 | Dec. 31, 2020 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 177,800 | 176,000 |
Value of restricted stock units issued | $ 1,330 | $ 966 |
March 8, 2021 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 36,000 | |
Closing price on date of grant | $ 7.73 | |
Value of restricted stock units issued | $ 278 | |
March 8, 2021 [Member] | Vesting Date 1 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 12,000 | |
Vesting Date | Mar. 8, 2021 | |
March 8, 2021 [Member] | Vesting Date 2 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 12,000 | |
Vesting Date | Mar. 8, 2022 | |
March 8, 2021 [Member] | Vesting Date 3 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 12,000 | |
Vesting Date | Mar. 8, 2023 | |
March 8, 2021 Grants Two [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 93,800 | |
Closing price on date of grant | $ 7.73 | |
Value of restricted stock units issued | $ 725 | |
March 8, 2021 Grants Two [Member] | Vesting Date 1 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 2,000 | |
Vesting Date | Mar. 8, 2021 | |
March 8, 2021 Grants Two [Member] | Vesting Date 2 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 30,924 | |
Vesting Date | Mar. 8, 2022 | |
March 8, 2021 Grants Two [Member] | Vesting Date 3 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 30,294 | |
Vesting Date | Mar. 8, 2023 | |
March 8, 2021 Grants Two [Member] | Vesting Date 4 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 31,212 | |
Vesting Date | Mar. 8, 2024 | |
June 3, 2021 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 18,000 | |
Closing price on date of grant | $ 7.29 | |
Value of restricted stock units issued | $ 131 | |
June 3, 2021 [Member] | Vesting Date 1 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 5,940 | |
Vesting Date | Jun. 3, 2021 | |
June 3, 2021 [Member] | Vesting Date 2 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 5,940 | |
Vesting Date | Jun. 3, 2022 | |
June 3, 2021 [Member] | Vesting Date 3 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 6,120 | |
Vesting Date | Jun. 3, 2023 | |
November 23, 2021 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 20,000 | |
Closing price on date of grant | $ 6.60 | |
Value of restricted stock units issued | $ 132 | |
November 23, 2021 [Member] | Vesting Date 1 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 6,600 | |
Vesting Date | Nov. 23, 2022 | |
November 23, 2021 [Member] | Vesting Date 2 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 6,600 | |
Vesting Date | Nov. 23, 2023 | |
November 23, 2021 [Member] | Vesting Date 3 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 6,800 | |
Vesting Date | Nov. 23, 2024 | |
December 31, 2021 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 10,000 | |
Closing price on date of grant | $ 6.36 | |
Value of restricted stock units issued | $ 64 | |
December 31, 2021 [Member] | Vesting Date 1 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 3,300 | |
Vesting Date | Dec. 31, 2022 | |
December 31, 2021 [Member] | Vesting Date 2 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 3,300 | |
Vesting Date | Dec. 31, 2023 | |
December 31, 2021 [Member] | Vesting Date 3 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | 3,400 | |
Vesting Date | Dec. 31, 2024 | |
January 1, 2020 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 15,000 |
Closing price on date of grant | | $ 5.95 |
Value of restricted stock units issued | | $ 89 |
January 1, 2020 [Member] | Vesting Date 1 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 4,950 |
Vesting Date | | Jan. 1, 2021 |
January 1, 2020 [Member] | Vesting Date 2 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 4,950 |
Vesting Date | | Jan. 1, 2022 |
January 1, 2020 [Member] | Vesting Date 3 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 5,100 |
Vesting Date | | Jan. 1, 2023 |
March 6, 2020 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 24,000 |
Closing price on date of grant | | $ 5.89 |
Value of restricted stock units issued | | $ 141 |
March 6, 2020 [Member] | Vesting Date 1 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 7,920 |
Vesting Date | | Mar. 6, 2020 |
March 6, 2020 [Member] | Vesting Date 2 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 7,920 |
Vesting Date | | Mar. 6, 2021 |
March 6, 2020 [Member] | Vesting Date 3 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 8,160 |
Vesting Date | | Mar. 6, 2022 |
March 6, 2020 Grants Two [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 86,000 |
Closing price on date of grant | | $ 5.89 |
Value of restricted stock units issued | | $ 507 |
March 6, 2020 Grants Two [Member] | Vesting Date 1 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 28,380 |
Vesting Date | | Mar. 6, 2021 |
March 6, 2020 Grants Two [Member] | Vesting Date 2 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 28,380 |
Vesting Date | | Mar. 6, 2022 |
March 6, 2020 Grants Two [Member] | Vesting Date 3 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 29,240 |
Vesting Date | | Mar. 6, 2023 |
August 14, 2020 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 30,000 |
Closing price on date of grant | | $ 4.41 |
Value of restricted stock units issued | | $ 132 |
August 14, 2020 [Member] | Vesting Date 1 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 9,900 |
Vesting Date | | Aug. 14, 2020 |
August 14, 2020 [Member] | Vesting Date 2 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 9,900 |
Vesting Date | | Aug. 14, 2021 |
August 14, 2020 [Member] | Vesting Date 3 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 10,200 |
Vesting Date | | Aug. 14, 2022 |
October 20, 2020 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 10,000 |
Closing price on date of grant | | $ 4.60 |
Value of restricted stock units issued | | $ 46 |
October 20, 2020 [Member] | Vesting Date 1 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 3,300 |
Vesting Date | | Oct. 20, 2020 |
October 20, 2020 [Member] | Vesting Date 2 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 2,211 |
Vesting Date | | Oct. 20, 2021 |
October 20, 2020 [Member] | Vesting Date 3 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 2,211 |
Vesting Date | | Oct. 20, 2022 |
October 20, 2020 [Member] | Vesting Date 4 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 2,278 |
Vesting Date | | Oct. 20, 2023 |
December 31, 2019 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 11,000 |
Closing price on date of grant | | $ 4.67 |
Value of restricted stock units issued | | $ 51 |
December 10, 2021 [Member] | Vesting Date 1 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 3,630 |
Vesting Date | | Dec. 10, 2021 |
December 10, 2021 [Member] | Vesting Date 2 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 3,630 |
Vesting Date | | Dec. 10, 2022 |
December 10, 2021 [Member] | Vesting Date 3 [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Number of restricted stock units | | 3,740 |
Vesting Date | | Dec. 10, 2023 |