Year Ended December 31, | ||||||||
2013 | 2012 | |||||||
Balance at beginning of period | $ | 2,902 | $ | 3,026 | ||||
Conversion of units | (23 | ) | (45 | ) | ||||
Forfeiture of units | — | (15 | ) | |||||
Redemption value allocation | 2,663 | 776 | ||||||
Comprehensive loss: | ||||||||
Foreign exchange translation | (6 | ) | 2 | |||||
Net loss | (497 | ) | (842 | ) | ||||
Balance at end of period | $ | 5,039 | $ | 2,902 |