Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Net Investment in Sales-type Leases (Schedule of Company's Net Investment in Sales-type Leases) (Details)

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Net Investment in Sales-type Leases (Schedule of Company's Net Investment in Sales-type Leases) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Net Investment in Sales-type Leases [Abstract]    
Future minimum lease payments receivable $ 31,858 $ 24,930
Less allowance for doubtful accounts (682) (452)
Net future minimum lease payment receivable 31,176 24,478
Less unearned interest income (1,687) (1,486)
Net investment in sales-type leases $ 29,489 $ 22,992