Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Line Items]
Valuation allowance	$ 10,593,000	$ 11,530,000	[1]
Net deferred tax asset	28,667,000	24,584,000	[1]
Alternative minimum tax carry forwards	1,690,000	540,000	[1]
Accrued income taxes, current judgment	2,600,000
Increase (decrease) to unrecognized tax interest	400,000	500,000
Unrecognized tax interest	6,300,000	5,900,000
Impact of effective tax rate if recognized	10,000,000	9,400,000
Uncertain tax position probable changes in next 12 months	1,500,000	500,000
Unrecognized tax benefits – net	11,480,000	$ 11,022,000		$ 3,760,000	$ 2,160,000
United States [Member]
Income Tax Disclosure [Line Items]
Alternative minimum tax carry forwards	2,000,000
New Zealand [Member]
Income Tax Disclosure [Line Items]
Net operating loss carry forwards	12,000,000
Puerto Rico [Member]
Income Tax Disclosure [Line Items]
Net operating loss carry forwards	14,100,000
New York State [Member]
Income Tax Disclosure [Line Items]
Net operating loss carry forwards	45,000,000
New York City [Member]
Income Tax Disclosure [Line Items]
Net operating loss carry forwards	$ 40,000,000

[1] December 31, 2015 balances included the restatement impact as a result of a change in accounting principle (see Note 2 - Summary of Significant Accounting Policies - Accounting Changes)