|
Schedule II - Valuation accounts (Detail) (Allowance for Doubtful Accounts, USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
|
Allowance for Doubtful Accounts
|
|||
| Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Balance at Beginning of Period | $ 743 | $ 1,006 | $ 908 |
| Charged to Cost and Expenses | (125) | 263 | 98 |
| Charge-off Against Allowances | 0 | (526) | 0 |
| Balance at End of Period | $ 618 | $ 743 | $ 1,006 |