Equity - Summary of Restricted Stock Units Awarded (Detail) - USD ($)
$ / shares in Units, $ in Thousands |
12 Months Ended |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Number of Restricted Stock Units |
145,979
|
34,292
|
114,821
|
| Value of restricted stock units issued |
$ 1,751
|
$ 548
|
$ 1,578
|
| Number of Restricted Stock Units |
87,923
|
80,261
|
69,906
|
| January 1, 2015 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Number of Restricted Stock Units |
103,111
|
|
|
| Closing price on date of grant |
$ 12.71
|
|
|
| Value of restricted stock units issued |
$ 1,311
|
|
|
| March 4, 2015 [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 |
$ 11.39
|
|
|
| Value of restricted stock units issued |
$ 228
|
|
|
| March 13, 2015 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
Mar. 13, 2015
|
|
|
| Number of Restricted Stock Units |
22,868
|
|
|
| Closing price on date of grant |
$ 9.25
|
|
|
| Value of restricted stock units issued |
$ 212
|
|
|
| March 6, 2014 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Number of Restricted Stock Units |
|
34,292
|
|
| Closing price on date of grant |
|
$ 15.99
|
|
| Value of restricted stock units issued |
|
$ 548
|
|
| March 8, 2013 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Number of Restricted Stock Units |
|
|
40,836
|
| Closing price on date of grant |
|
|
$ 10.51
|
| Value of restricted stock units issued |
|
|
$ 429
|
| June 05, 2013 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Number of Restricted Stock Units |
|
|
3,425
|
| Closing price on date of grant |
|
|
$ 10.45
|
| Value of restricted stock units issued |
|
|
$ 36
|
| September 12, 2013 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
|
|
Sep. 21, 2013
|
| Number of Restricted Stock Units |
|
|
1,667
|
| Closing price on date of grant |
|
|
$ 11.19
|
| Value of restricted stock units issued |
|
|
$ 19
|
| Number of Restricted Stock Units |
|
|
1,667
|
| December 31, 2013 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Number of Restricted Stock Units |
|
|
68,893
|
| Closing price on date of grant |
|
|
$ 15.88
|
| Value of restricted stock units issued |
|
|
$ 1,094
|
| Vesting Date 1 [Member] | January 1, 2015 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
Jan. 01, 2016
|
|
|
| Number of Restricted Stock Units |
34,027
|
|
|
| Vesting Date 1 [Member] | March 4, 2015 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
Mar. 04, 2015
|
|
|
| Number of Restricted Stock Units |
6,800
|
|
|
| Vesting Date 1 [Member] | March 6, 2014 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
|
Mar. 06, 2014
|
|
| Number of Restricted Stock Units |
|
20,892
|
|
| Vesting Date 1 [Member] | March 8, 2013 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
|
|
Mar. 08, 2013
|
| Number of Restricted Stock Units |
|
|
27,436
|
| Vesting Date 1 [Member] | June 05, 2013 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
|
|
Jun. 05, 2014
|
| Number of Restricted Stock Units |
|
|
1,141
|
| Vesting Date 1 [Member] | December 31, 2013 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
|
|
Dec. 31, 2014
|
| Number of Restricted Stock Units |
|
|
22,735
|
| Vesting Date 2 [Member] | January 1, 2015 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
Jan. 01, 2017
|
|
|
| Number of Restricted Stock Units |
34,027
|
|
|
| Vesting Date 2 [Member] | March 4, 2015 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
Dec. 31, 2015
|
|
|
| Number of Restricted Stock Units |
6,600
|
|
|
| Vesting Date 2 [Member] | March 6, 2014 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
|
Dec. 31, 2014
|
|
| Number of Restricted Stock Units |
|
6,600
|
|
| Vesting Date 2 [Member] | March 8, 2013 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
|
|
Dec. 31, 2013
|
| Number of Restricted Stock Units |
|
|
6,600
|
| Vesting Date 2 [Member] | June 05, 2013 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
|
|
Jun. 05, 2015
|
| Number of Restricted Stock Units |
|
|
1,142
|
| Vesting Date 2 [Member] | December 31, 2013 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
|
|
Dec. 31, 2015
|
| Number of Restricted Stock Units |
|
|
22,735
|
| Vesting Date 3 [Member] | January 1, 2015 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
Jan. 01, 2018
|
|
|
| Number of Restricted Stock Units |
35,057
|
|
|
| Vesting Date 3 [Member] | March 4, 2015 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
Dec. 31, 2016
|
|
|
| Number of Restricted Stock Units |
6,600
|
|
|
| Vesting Date 3 [Member] | March 6, 2014 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
|
Dec. 31, 2015
|
|
| Number of Restricted Stock Units |
|
6,800
|
|
| Vesting Date 3 [Member] | March 8, 2013 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
|
|
Dec. 31, 2014
|
| Number of Restricted Stock Units |
|
|
6,800
|
| Vesting Date 3 [Member] | June 05, 2013 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
|
|
Jun. 05, 2016
|
| Number of Restricted Stock Units |
|
|
1,142
|
| Vesting Date 3 [Member] | December 31, 2013 [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Vesting Date |
|
|
Dec. 31, 2016
|
| Number of Restricted Stock Units |
|
|
23,423
|