Financial Statement Schedules - Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2016

Valuation And Qualifying Accounts [Abstract]

Financial Statement Schedules - Schedule II - Valuation and Qualifying Accounts

2. Financial Statements Schedule:

Schedule II: Valuation and Qualifying Accounts

Allowance for Doubtful Accounts and Sales Credits	Balance at Beginning of Year		Charged to Expenses/ Against Revenue		Write-Offs Net of Recoveries		Balance at End of Year
Year Ended December 31, 2016	$	—		—	$	—	$	—
Year Ended December 31, 2015	$	—		—	$	—	$	—
Year Ended December 31, 2014	$	—		—	$	—	$	—

All other schedules have been omitted because they are not required, not applicable, or the required information is otherwise included.