| 3. | ACCOUNTS RECEIVABLE |
Accounts receivable consisted of the following (in thousands):
| Year Ended December 31, |
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| 2011 | 2010 | |||||||
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Accounts receivable–billed |
$ | 55,022 | $ | 56,064 | ||||
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Accounts receivable–unbilled |
5,591 | 3,451 | ||||||
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Allowance for doubtful accounts and sales allowances |
(1,714 | ) | (1,600 | ) | ||||
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Total |
$ | 58,899 | $ | 57,915 | ||||
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Activity in the allowance for doubtful accounts for the fiscal years ended December 31, 2011, 2010 and 2009 was as follows (in thousands):
| Year Ended December 31, | ||||||||||||
| 2011 | 2010 | 2009 | ||||||||||
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Allowance for doubtful accounts |
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Beginning balance |
$ | 1,600 | $ | 2,658 | $ | 2,195 | ||||||
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Provision for doubtful accounts–sales allowances |
291 | 458 | 1,331 | |||||||||
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Provision for doubtful accounts–credit losses |
476 | (134 | ) | 936 | ||||||||
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Foreign currency translation adjustments |
(7 | ) | 55 | 1 | ||||||||
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Charges against allowance |
(646 | ) | (1,437 | ) | (1,805 | ) | ||||||
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Ending balance |
$ | 1,714 | $ | 1,600 | $ | 2,658 | ||||||
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