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Consolidated Statements of Cash Flows - USD ($) | 6 Months Ended
--- | ---
Jun. 30, 2015 | Jun. 30, 2014
Payments to Acquire Marketable Securities | $ 3,013,157 | $ 919,829
Cash flows from operating activities: |  |
Net loss | (36,389,505) | (26,599,576)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Equity-based compensation expense | 8,132,106 | 5,653,451
Depreciation and amortization | 1,254,305 | 987,698
Changes in fair value of derivative liability | 0 | 23,175
Change in acquisition-related contingent consideration | (4,800,000) | 400,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) | 9,400,000 | 0
Bad debt recovery | (2,641) | (2,020)
Deferred income taxes | (3,656,730) | 94,796
Accretion Expense | 33,054 | 0
Changes in operating assets and liabilities: |  |
Prepaid expenses and other current assets | 368,620 | (944,297)
Accounts receivable | 1,816,376 | (602,132)
Deferred costs | (406,498) | (762,788)
Unearned revenues | 308,912 | 1,013,946
Other assets | (8,005) | (106,909)
Accounts payable, accrued liabilities and other liabilities | 2,122,987 | (1,615,234)
Net cash used in operating activities | (21,827,019) | (22,506,240)
Cash flows from investing activities: |  |
Proceeds from Sale and Maturity of Marketable Securities | 7,049,000 | 0
Acquisition of property, plant and equipment | (1,802,607) | (2,439,266)
Net cash provided by (used in) investing activities | 2,233,236 | (3,308,201)
Cash Acquired from Acquisition | 0 | 50,894
Cash flows from financing activities: |  |
Proceeds from exercise of options | 0 | 230,183
Proceeds from exercise of warrants | 0 | 1,373,925
Net proceeds from issuance of common stock | 36,136,414 | 10,149,439
Repayment of mortgage loan | 0 | (105,450)
Proceeds from notes payable | 1,089,611 | 1,340,981
Repayment of notes payable | (594,979) | (443,325)
Net cash provided by financing activities | 36,631,046 | 12,545,753
Net increase (decrease) in cash and cash equivalents | 17,037,263 | (13,268,688)
Cash and cash equivalents at beginning of period | 19,174,061 | 46,133,759
Cash and cash equivalents at beginning of period | 36,211,324 | 32,865,071
Cash paid during the period for: |  |
Interest | 744,811 | 196,200
Common stock and contingent consideration issued in merger | $ 0 | $ 35,252,451

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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=51664549&loc=SL4569616-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591552-111686 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 + Details
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