Condensed Statement of Cash Flows (unaudited) (USD $)	3 Months Ended
Mar. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net Loss	$ (8,193)us-gaap_NetIncomeLoss
Changes in operating assets and liabilities:
Prepaid expenses	(119,345)
Accounts payable	81,977
Net cash provided by Operating Activities	(45,561)
CASH FLOWS FROM INVESTING ACTIVITIES
Investment in restricted cash and cash equivalents	(117,300,000)
Net cash used in Investing Activities	(117,300,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Payment of offering costs	(43,208)hrmn_PaymentOfOfferingCosts
Proceeds from advances from stockholders	75,674us-gaap_ProceedsFromRelatedPartyDebt
Proceeds from Public Offering, net of offering costs	112,605,665
Proceeds from Insider Units	5,585,000
Net cash provided by Financing Activities	118,223,131
Net increase in cash and cash equivalents	877,570
Cash and cash equivalents at beginning of period	1,115
Cash and cash equivalents at end of period	878,685
Supplemental disclosure of non-cash investing and financing activities
Accrual of deferred offering cost	$ 4,325,000hrmn_AccrualOfDeferredOfferingCost

Accrual of deferred offering cost.

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Payment of offering costs.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.

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The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

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The increase (decrease) during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The net cash paid (received) associated with the acquisition or disposal of all investments, including securities and other assets.

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The cash inflow associated with the amount received from entity's first offering of stock to the public.

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The cash inflow from the issuance of preferred limited partners units during the period.

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The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.

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