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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2015
Accounting Policies [Abstract] |
Summary Of Activity Recorded Within The Allowance For Doubtful Accounts | The following table summarizes activity recorded within the allowance for doubtful accounts balances for the years ended December 31 (in thousands):
| 2015 |  | 2014 |  | 2013
Beginning balance | $ | 4,280 |  |  | $ | 4,774 |  |  | $ | 4,481 |
Bad debt expense | 1,404 |  |  | 1,095 |  |  | 910 |
Accounts written off and other adjustments | (816 | ) |  | (1,589 | ) |  | (617 | )
Ending balance | $ | 4,868 |  |  | $ | 4,280 |  |  | $ | 4,774 |
Summary Of Interest Capitalized And Depreciation Expense | The table below sets forth the amount of interest capitalized and depreciation expense recognized during the years ended December 31 (in thousands):
| 2015 |  | 2014 |  | 2013
Capitalized interest | $ | 166 |  |  | $ | 420 |  |  | $ | 182 |
Depreciation expense | $ | 17,869 |  |  | $ | 19,712 |  |  | $ | 20,478 |

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- Definition Tabular disclosure of credit losses for current financing receivables (such as trade and accounts receivable), including a rollforward of the balance. An alternative caption includes allowance for doubtful accounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
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