Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Line Items]
Federal tax rate			21.00%	21.00%	35.00%
Provisional tax expense		$ 13,000,000
Net deferred tax assets	$ 2,300,000
One-time mandatory repatriation tax	1,200,000
Deferred tax liability	1,100,000
Net tax impact	10,700,000
Increase (decrease) to unrecognized tax interest			$ (700,000)	$ 430,000
Unrecognized tax interest	9,500,000		10,200,000	9,500,000
Impact of effective tax rate if recognized	4,700,000		4,100,000	4,700,000
Alternative minimum tax credit carry-forwards	$ 1,117,000		661,000	$ 1,117,000
Change in valuation allowance on net deferred tax assets			27,200,000
Domestic Tax Authority [Member]
Income Tax Disclosure [Line Items]
Alternative minimum tax credit carry-forwards			3,600,000
United States [Member]
Income Tax Disclosure [Line Items]
Alternative minimum tax credit carry-forwards			1,200,000
Tax refund			661,000
New Zealand [Member]
Income Tax Disclosure [Line Items]
Alternative minimum tax credit carry-forwards			8,800,000
California [Member]
Income Tax Disclosure [Line Items]
Alternative minimum tax credit carry-forwards			5,300,000
Hawaii [Member]
Income Tax Disclosure [Line Items]
Alternative minimum tax credit carry-forwards			4,100,000
New Jersey [Member]
Income Tax Disclosure [Line Items]
Alternative minimum tax credit carry-forwards			300,000
New York State [Member]
Income Tax Disclosure [Line Items]
Alternative minimum tax credit carry-forwards			44,100,000
New York City [Member]
Income Tax Disclosure [Line Items]
Alternative minimum tax credit carry-forwards			44,000,000
Minimum [Member]
Income Tax Disclosure [Line Items]
Uncertain tax position probable changes in next 12 months			500,000
Maximum [Member]
Income Tax Disclosure [Line Items]
Uncertain tax position probable changes in next 12 months			$ 1,500,000