Fair Value Measurements - Schedule of Financial Instruments Measured at Fair Value on Recurring Basis (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Summary of financial instruments measured at fair value on a recurring basis
Financial assets	$ 7,425,000	$ 12,314,000
Transfers from Level 1 to Level 2	0	0
Transfers from Level 2 to Level 1	0	0
Level 1 [Member]
Summary of financial instruments measured at fair value on a recurring basis
Financial assets	6,262,000	11,172,000
Level 2 [Member]
Summary of financial instruments measured at fair value on a recurring basis
Financial assets	1,163,000	1,142,000
Level 3 [Member]
Summary of financial instruments measured at fair value on a recurring basis
Financial assets	0	0
Money Market Funds [Member]
Summary of financial instruments measured at fair value on a recurring basis
Financial assets	6,262,000	11,172,000
Money Market Funds [Member] | Level 1 [Member]
Summary of financial instruments measured at fair value on a recurring basis
Financial assets	6,262,000	11,172,000
Money Market Funds [Member] | Level 2 [Member]
Summary of financial instruments measured at fair value on a recurring basis
Financial assets	0	0
Money Market Funds [Member] | Level 3 [Member]
Summary of financial instruments measured at fair value on a recurring basis
Financial assets	0	0
Common Shares of Co Two Solution [Member]
Summary of financial instruments measured at fair value on a recurring basis
Financial assets	1,163,000	1,142,000
Common Shares of Co Two Solution [Member] | Level 1 [Member]
Summary of financial instruments measured at fair value on a recurring basis
Financial assets		0
Common Shares of Co Two Solution [Member] | Level 2 [Member]
Summary of financial instruments measured at fair value on a recurring basis
Financial assets	$ 1,163,000	1,142,000
Investment owned (shares)	10,000,000
Common Shares of Co Two Solution [Member] | Level 3 [Member]
Summary of financial instruments measured at fair value on a recurring basis
Financial assets	$ 0	$ 0