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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Allowance For Doubtful Accounts Receivable Rollforward [Line Items] |  |  |
Allowance for Doubtful Accounts, Balance at Beginning of Period | $ 664 | $ 395 | $ 578
Charged to Costs and Expenses | 206 | 339 | 139
Allowance From Acquisitions | 0 | 99 | 0
Write Off of Uncollectible Accounts, Net of Recoveries | (310) | (169) | (322)
Allowance for Doubtful Accounts, Balance at End of Period | $ 560 | $ 664 | $ 395

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