Segment And Geographic Information (Schedule Of Geographic Allocation Of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2016	[1]	Sep. 30, 2016	[1]	Jun. 30, 2016	[1]	Mar. 31, 2016	[1]	Dec. 31, 2015	[1]	Sep. 30, 2015	[1]	Jun. 30, 2015	[1]	Mar. 31, 2015	[1]	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 77,274		$ 78,472		$ 71,642		$ 66,966		$ 65,692		$ 66,117		$ 59,366		$ 58,492		$ 294,354	[2]	$ 249,667	[2]	$ 227,589	[2],[3]
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue																	116,121		48,103		13,821
France [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue																	26,504		25,811		26,586
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue																	19,706		24,919		26,124
Switzerland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue																	17,862		18,937		22,813
Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue																	13,495		17,703		23,169
Other Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue																	52,200		62,702		64,677
Other Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue																	36,440		37,353		33,235
Other International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue																	$ 12,026		$ 14,139		$ 17,164

[1] Amounts for the quarters ended March 31, 2016 and 2015, June 30, 2016 and 2015, September 30, 2016 and 2015, and December 31, 2015 have been restated for immaterial corrections of identified errors relating to prepaid loan fees (see Note 2 (b) "Correction of Immaterial Errors")

[2] Amounts for the years ended December 31, 2015 and 2014 have been restated for immaterial corrections of identified errors relating to prepaid loan fees (see Note 2 (b) "Correction of Immaterial Errors").

[3] At the inception of the lease, the Company records the total minimum lease payments, executory costs, if any, and unguaranteed residual value as gross finance lease receivables. The gross finance lease receivables are reduced as customer payments are received. There was $2.1 million and no unguaranteed residual value, respectively, at December 31, 2016 and 2015, included in gross finance lease receivables. There were no executory costs included in gross finance lease receivables as of December 31, 2016 and 2015.